Inventions
INVENTION INVENTOR YEAR
1) Computer Charles Babbage 1822
2) Telephone A. G. Bell 1878
3) Wireless Telegraphy Guglielmo Marconi 1894
4) Safety Razor King Camp Gillette 1903
5) Ice Cream Cone Italo Marioni 1904
6) Electric Washing Machine Alva J Fisher 1906
7) Vaccuum Cleaner with bag J Murray Sprangler 1907
8) Crossword Puzzle Arthur Wynne 1913
9) Zip Fastener Gideon Sundback 1913
10) Tea Bag Joseph Krieger 1920
11) Frozen food Clarence Birdseye 1924
12) Aeroso;l Spray Eric Rotheim 1926
13) Pop up Toaster Charles Trite 1927
14) Elastoplast Horatio Nelson Smith 1928
15) Sliced Bread Otto Rohwedder 1928
16) Electric Razor Col Job Schick 1931
17) Trampoline George Nissen and Lary Griswold 1934
18) Ball point Pen Laszlo Biro 1938
19) Instant Coffee Nestle 1938
20) Microwave Owen Percy LeBaron Spencer 1945