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|  | Earl Bakken Inventor Wearable Portable Pacemaker Signed Autographed Index Card $9.99 | |
![Alexander Graham Bell Autograph w/ Jsa Loa - [ Hand Signed ]](https://i.ebayimg.com/thumbs/images/g/jekAAOSw4IRfB-fJ/s-l225.jpg) | Alexander Graham Bell Autograph w/ Jsa Loa - [ Hand Signed ] $750.00 | |
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|  | New ListingRare! Richard E. Byrd Explorer typed signed letter - d.1/22/1954 - Autograph $159.00 | |
 | Thomas A. Edison - Autograph Note Signed $700.00 | |
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|  | 1936 Sigmund Freud Autographed Letter to Daughter of Freud's Mentor Josef Breuer $3,500.00 | |
 | Thomas Edison signed Letter w Handwriting Jsa Loa Inventor Rare d.1931 Z413 $899.00 | |
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|  | William Ginkel - Atomic Energy Idaho - Lot Letters, Photo - Manhattan Project $125.00 | |
 | Al Alcorn signed Inventor Pong Computer Science Rare Coa Look! $29.99 | |
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|  | 1998 Jeff Bezos Signed Autograph Amazon Billionaire Rare Employee Customer Gift $1,250.00 | |
 | George Trumbull Ladd Signed Letter Autograph Psychologist Educator Content $49.99 | |
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|  | Autographed Vint Cerf business card Inventor Of Internet Signed $19.99 | |
 | Stanley Steamer, Freelan O. Stanley Signed Letter / Dry Plate Co. Sold to Kodak $875.00 | |
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|  | Leonard Kleinrock “Real” Inventor of the Internet Signed Autographed Index Card $9.99 | |
 | Steve Jobs Signed Letter On Apple Letterhead Framed $15,000.00 | |
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|  | Steve Woz Wozniak Signed 3x3 Bookplate Apple Ii Com Founder Psa/Dna Autographed $75.00 | |
 | F.A. Mitchell - Hedges and Lady Richmond Brown Signed Cut Psa/Dna Authenticated $399.99 | |
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|  | Thomas A. Edison - Autograph Signed Initialed “Tae” Twice On Page Handwriting Nr $695.00 | |
 | Ron Popeil Inventor Ronco Pocket Fisherman Showtime Rotisserie Signed Autograph $59.99 | |
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|  | Albert Einstein Autograph Card Signed re: Search for Greater Meaning $70,000.00 | |
 | Allan Al Alcorn Atari Pong Inventor Video Game Pioneer Cosmos Signed 4X6 Photo $8.50 | |
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|  | Inventor George Westinghouse Signed (2x) Contract 1897 / Rr Air Brake in Canada $1,250.00 | |
 | Michael DeBakey Famous Heart Surgeon Inventor Signed Autograph Photo Display $49.99 | |
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|  | Guglielmo Marconi Autograph ( Signed Display) w/ Rr Auction Certificate $695.00 | |
![Jonas Salk Prominent Medical Researcher Polio Vaccine Signed [Tls] Typed Letter.](https://i.ebayimg.com/thumbs/images/g/OaUAAOSw07JenKZf/s-l225.jpg) | Jonas Salk Prominent Medical Researcher Polio Vaccine Signed [Tls] Typed Letter. $175.00 | |
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|  | Notre Dame Football Legend Knute Rockne Signed Cut. Hard-to-find-Guarantee! $750.00 | |
 | Richard Leakey paleoanthropologist signed autographed photo Conservationalist $25.00 | |
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|  | Milton Friedman Added "Nobel Prize 1976" Autographed Index Card 3X5 A $129.99 | |
 | Joseph Sabbaton - Engineer w/Patent for Purifying Oil-Gas/1851 Als $75.99 | |
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|  | "Microprocessor Inventor" Marcian Hoff Hand Signed 2X3.25 Card Jg Autographs Coa $139.99 | |
) | Albert Einstein Signed Framed Cut Jsa / James Spence Authentication Coa $2,995.00 | |
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|  | Thomas Edison Signed Autograph Photo Beckett Bas Authentic! $3,295.00 | |
 | Carl Djerassi autograph/signed Inventor of Birth Control Science Rare Coa Look! $44.99 | |
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|  | Rare! "Nobel Prize in Medicine" Hans Krebs Signed 3X5 Card Todd Mueller Coa $999.99 | |
 | 2013 Leaf “Cut Signature” John Nash Jr. Autograph “True #1/1” $85.00 | |
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|  | Louis Pasteur Choice Autograph ( Signed Display ) $750.00 | |
 | Robert Maurer Inventor Fiber Optic Cable Signed Autographed Index Card $9.99 | |
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|  | Steve Woz Wozniak Signed Apple I Computer Schematic + Insc Psa/Dna Autographed $110.00 | |
 | Philo T. Farnsworth - Article Signed $600.00 | |
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|  | 14 Authentic Handwritten Words by Albert Einstein - "Gallery of History" Coa $1,495.00 | |
 | Nikola Tesla Signed Autographed Letter to Edmund Zalinski 1897 Great Provenance! $10,000.00 | |
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|  | Electrical Pioneer Frank Julian Sprague Signed U. S. Naval Academy Cabinet Card $1,750.00 | |
 | Alexander Fleming Autograph ( Signed Card +) Rr Auction $695.00 | |
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|  | Arthur Fry Inventor Post-It Notes (really!) Signed Autographed Index Card $9.99 | |
) | Al Alcorn autographed Inventor Pong Computer Science Rare Coa Look! $29.99 | |
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|  | Charles Darwin - Ink Signature - Naturalist Who Conceived Theory of Evolution $3,400.00 | |
 | Surgeon Samuel D. Gross Signed Letter / 1853 Ama Convention + Crystal Palace $1,250.00 | |
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|  | Autograph letter by Scottish scientist Frederick Guthrie - September 1858 $100.00 | |
 | 1939 Albert Einstein Signed Letter Wwii Jewish Resistance Tls Autograph Psa/Dna $14,500.00 | |
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| ) | Charles Darwin Signed Handwritten Envelope Jsa / James Spence Authentication Coa $3,995.00 | |
 | Charles Darwin Signed Framed Cut Jsa / James Spence Authentication Coa $3,795.00 | |
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|  | Rare Bill Gates Signed Vision Summit Program-8 Signatures-Fortune 500-Jsa Letter $1,499.99 | |
 | 1917 Frederick Duesenberg Signed Letter, Radiator Cooling 4 + 6 Cylinder Motors $1,250.00 | |
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|  | Nov 13 1962 Rca President Engstrom Signed Ltr Ags Luncheon, Develop Radar & Tv $37.50 | |
 | Steve Woz Wozniak Signed 8" Floppy Disk Apple Ii Founder Psa/Dna Autographed $95.00 | |
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|  | Milton Friedman - First Day Cover Signed $100.00 | |
 | Rare 1976 Signed Bill Gates Letter and Business Card Sothebys Authentication $37,400.00 | |
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|  | Robert A. Millikan Nobel Prize Winner Signed 1937 Letter-Electricity-Optics -Jsa $599.99 | |
 | Thomas Edison * Jsa Loa * Hand Signed Autograph Red Cross Wwi Fund Card * $1,350.00 | |
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|  | Yang Chen-Ning signed cover Nobel Prize Physics 1957 $149.95 | |
 | Mathematical Calculations Handwritten by Francis Crick - Dna Co-Discoverer w Coa $300.00 | |
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|  | Max Delbruck (Nobel Prize Medicine 1969) Signed Swedish Nobel First Day Cover $55.00 | |
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Prices current as of last update, 07/30/20 6:03am.
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