On December 15, 1964, Kenneth Olsen (founder of DEC) received a patent for “magnetic core memory”. This was the first used in a minicomputer. In 1986,…
Patented Bird Diaper. This sounds funny. But birds can poop while flying, this poses problems for keeping birds as pets. Bird Diaper is quite useful in…
On December 10, 1898, Leamon G. Souder patented an escalator. This was the first of the four escalator-style patents issued to Souder, including two for…
On December 9, 1884, L. M. Richardson patented roller skates with ball bearings. This allowed skaters to gain speed with less efforts. This invention transformed…
On December 8, 1891, Samuel F. O’Reilly patented the first electric tattoo machine based on Thomas A. Edison’s autographic printing pen. He is known as…
