Inventor DeForest had perfected what he called the “phonofilm,” a device that records simultaneously a motion picture and a phonograph record of whatever noises are made near the camera. Mr.

Exactly 100 years ago, on March 12, 1923, American inventor Lee de Forest conducted a public demonstration of his Phonofilm at a press conference. Even though it wasn’t a great financial success ...

View DE FOREST PHONOFILM (1927) By Mucha Alphonse; Color poster; Sight: 45 1/2 x 29 in. (115.6 x 73.7 cm.), Frame: 63 x 46 in. (160 x 116.8 cm.); Signed; . Access more artwork lots and estimated & ...