Piano construction for sound amplification
United States Patent 2530251
US Patent References:
Telephone receiver
- - 1681161
Combination player-piano, radio, and phonograph
- - 1739680
Radiocabinet
- - 1915177
Musical instrument
- - 2001722
Small receiver
- - 2078385
Telephone receiver
- - 1681161
Combination player-piano, radio, and phonograph
- - 1739680
Radiocabinet
- - 1915177
Musical instrument
- - 2001722
Small receiver
- - 2078385
Inventors:
Louis, Luberoff
Publication Date:
11/14/1950
View Patent Images:
Export Citation:
Assignee:
Louis, Luberoff
Primary Class:
Other Classes:
369/80, 369/69, 84/744, 84/177, 984/367, 84/192, 84/170
International Classes:
G10H3/18; G10H3/00
Foreign References:
| GB491985A |