US2545361A
1946-05-10
Automatic phonograph
US2443491A
1944-06-29
Multiple clutch
US2546845A
1944-03-25
Selective record player
US2366469A
1942-08-05
Coin operated device
US2251026A
1940-03-25
Phonograph selecting system
US2231517A
1939-06-15
Multiple phonograph coupling apparatus
US2276449A
1939-05-19
Multiple coin receiver
US2253674A
1939-05-11
Coin actuated remote controller
US2265124A
1939-03-20
Indexed control apparatus
US2250916A
1938-02-28
Robot lip action
US2272500A
1938-01-28
Automatic selective record changer
DE687112C
1937-11-03
Device for the synchronous sequence of the movement of speech plates and the exposure of advertising objects or their movement during the discussion of these through the speech plates
GB504759A
1937-11-01
Improvements in gramophones operatively combined with electric switches
US2191026A
1937-06-07
Tone arm pickup
US2234102A
1937-04-26
Vibrator
US2168361A
1937-04-12
Clothes hanger
US2154428A
1937-04-10
Vibrator heater
US2155440A
1937-03-25
Lock
US2158761A
1937-03-25
Key cutting machine
US2234101A
1937-02-15
Treatment machine
