Remaining are the following:
Airplane
Alexander Graham Bell
Ben Franklin
Bifocals
Binney Smith
Blood Bank
Camera
Can Opener
Charles Drew
Christopher Latham Sholes
Demin Jeans
Edward Jenner
Eli Whitney
Etch A Sketch
Etienne Lenoir
Ezra Warner
Fountain Pen
James Watt
Johannes Gutenberg
Levi Strauss
LE Waterman
Liquid Paper
Microwave Oven
Penicillin
Printing Press
Richard Drew
Richard James
Robert Fulton
Samuel FB Morse
Scotch Tape
Sewing Machine
Silly Putty
Slinky
Steam Boat
Steam Engine
Telephone
Thomas ALVA Edison
Typewriter
WH Carrier
Wright Brothers 
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