3 ore 19 min, 30 dic 1779 anni - 3 toothbrush

Descrizione:

1780
William Addis of England invented the first mass-produced toothbrush. While in prison, he drilled small holes in a cattle bone, tied swine fibers (from wild pigs) in bunches, passed them through the holes and then glued them.

Aggiunto al nastro di tempo:

Data: