The first alarm clock could only ring at 4 a.m.
120
A small airplane can fly backwards.
75
More steel in the United States is used to make bottle caps than to manufacture automobile bodies.
55
Kleenex tissues were originally used as filters in gas masks.
46
In the early 1960's, Porsche commercially manufactured farm tractors.
24
The life boat was patented in 1845!
29
Super Nintendo and Sega Genesis had an online multiplayer mode.
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