Loud speaker for outdoor theaters
United States Patent 2718931
US Patent References:
Carbon microphone
- - 2345078
Housing for space heaters and sound translators
- - 2521654
Microphone damping system having rear openings
- - 2540498
Acoustically filtered phonographic reproducer
- - 2541163
Directional microphone
- - 2587684
Carbon microphone
- - 2345078
Housing for space heaters and sound translators
- - 2521654
Microphone damping system having rear openings
- - 2540498
Acoustically filtered phonographic reproducer
- - 2541163
Directional microphone
- - 2587684
Inventors:
Angelo, Boudouris
Publication Date:
09/27/1955
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Assignee:
Angelo, Boudouris
Primary Class:
International Classes:
H04R1/02