An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Sony researchers have developed a refrigerator that only opens when you smile.
9
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
The American Automobile Association was founded for the sole purpose of warning motorists of police speed traps!
36
The ball on top of a flagpole is called a 'truck'.
24
