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3h 19min, dec 30, 1779 y - 3 toothbrush

Description:

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.

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21 Nov 2017
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Date:

3h 19min, dec 30, 1779 y
Now
~ 245 years ago