Phonograph

This Day in Patent History - On February 19, 1878, Thomas Edison received a patent for the phonograph

On February 19, 1878, Thomas Edison received a patent for the phonograph. The photo shows Thomas Edison with his patented phonograph.The device could mechanically record…

Patent Information Publication number: US200521 A Patent Title: Improvement in phonograph or speaking machines Publication type: Grant Publication date: Feb 19, 1878 Filing date:…

This Day in Patent History - On October 17, 1888, Thomas Edison filed a patent for the Optical Phonograph (the first movie). Edison claimed is that it will ‘do for the eye what the phonograph does for the ear.’

On October 17, 1888, Thomas Edison filed a patent for the Optical Phonograph (the first movie). Edison claimed is that it will ‘do for the…