This Day in Patent History - On December 2, 1969, a patent for home security system utilizing television surveillance was granted to Marie V.B. Brown On December 2, 1969, a patent for home security system utilizing television surveillance was granted to Marie V.B. Brown. …
This Day in Patent History - On December 1, 1914, Nikola Tesla patented an apparatus for transmitting electrical energy On December 1, 1914, Nikola Tesla patented an apparatus for transmitting electrical energy. …
Nikola Tesla Patent#9 - Electro-magnetic motor - US 381969 Patent Information Publication number: US381969 A Patent Title: Electro-magnetic motor Publication…
This Day in Patent History - On November 30, 1858, John Mason patented the screw neck bottle called the Mason Jar On November 30, 1858, John Mason patented the screw neck bottle called the Mason Jar …