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Inventions 0001 
Rearrange these inventions into the order in which their inventors first applied for a patent, beginning with the earliest at the top
Correct answers are shown on the right
Randomly ordered list
- 1: Gillette safety razor
- 2: Macintosh
- 3: Biro
- 4: Saxophone
- 5: Bessemer converter
- 6: Diesel engine
- 7: Gatling gun
- 8: Dolby noise reduction system
- 9: Rubik's cube
- 10: Bakelite
Correctly ordered list
1: Macintosh 1823
2: Saxophone 1846
3: Bessemer converter 1856
4: Gatling gun 1862
5: Diesel engine 1892
6: Gillette safety razor 1901
7: Bakelite 1909
8: Biro 1938
9: Rubik's cube 1975
10: Dolby noise reduction system 1982
