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Jan 23, 1450
Johannes Gutenberg
Printing Press -
Ben Franklin
Lightning Rod -
James Watt
Steam engine -
Eli Whitney
Cotton gin -
Dr. Edward Jenner
Small pox vaccine -
Robert Fulton
Steamboat -
Joseph-Nicephore Niepce
Camera -
Samuel F.B. Morse
Telegraph -
Levi Strauss
Denim jeans -
Elisha G. Otis
Elevator brake -
Isaac Merritt Singer
Sewing machine -
Ezra J. Warner
Can opener -
Etienne Lenoir
Gas engine -
Christopher Latham Sholes
Typewriter -
Elijah McCoy
Automatic lubricator -
Alexander Graham Bell
Telephone -
Thomas Alva Edison
Light bulb -
L. E. Waterman
Fountain pen -
Whitcomb Judson
Zipper -
W. H. Carrier
Air conditioning -
Wilbur & Orville Wright
Airplane -
Edward Binney/Harold Smith
Crayola -
Richard Drew
Masking tape -
Alexander Fleming
Penicillin -
Dr. Charles Drew
Blood bank -
James Wright
Silly Putty -
Richard James
Slinky -
Percy L. Spencer
Microwave oven -
Bette Nesmith Graham
Liquid paper -
Arthur Granjean
Etch-A-Sketch -
Spencer Silver
Post-It notes -
Ann Moore
Snugli child carrier