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: patents
See patent, supra
See patent, supra
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.