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…
On December 7, 1880, Alexander Graham Bell patented photophone, which allowed for the transmission of speech on a beam of light. Bell believed the photophone…
On December 6, 1892, W. Kales patented physician’s table. Patent Information Publication number: US487625 A Patent Title: Physician s table Publication type: Grant Publication date:…
On December 2, 1969, a patent for home security system utilizing television surveillance was granted to Marie V.B. Brown. …
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