One town in China -- Hangzhou City -- boasts that it has 358 patents on various toothbrush designs, such that virtually every citizen is an inventor of his own particular style of brush.
Tag: toothbrush
Did you know the predecessor of the toothbrush was the toothstick? Patented technology from 2,000 B.C.
The Toothbrush Patent, Part One
Whether and how you cleaned your teeth before this time depended principally on sense and sensibility. The primary form of dental hygiene was the mighty toothstick (forefather of our toothpick); to wit, a twig.