This Day in Patent History - On January 26, 1875, the first electric dental drill was patented George Green, a development that revolutionized dentistry On January 26, 1875, the first electric dental drill was patented George Green, a development that revolutionized dentistry. Humans have been drilling teeth since over…
Nikola Tesla Patent#9 - Electro-magnetic motor - US 381969 Patent Information Publication number: US381969 A Patent Title: Electro-magnetic motor Publication…
Nikola Tesla Patent #8 – Electro-magnetic motor – US 381968 Patent Information Publication number: US381968 A Patent Title : Electro-magnetic motor…
