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15 avr. 1908 - Howard Hughes invented the drill bit

Description:

He invented a drill bit to break through rock. And it became the biggest selling drill bit in the world.

Ajouté au bande de temps:

Major grade

ByMatthew Cornwall
19 mars 2018

Date:

15 avr. 1908
Maintenaint
~ Il y a 116 ans
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