Speaker system
United States Patent 3393766
US Patent References:
Sound box for amplifying horns with loudspeakers
- - 2058132
Extension loud speaker
- - 2896737
Tubular speaker housing
- - 2905259
Electroacoustic tone modifying systems for stringed musical instruments
- - 3080785
Sound box for amplifying horns with loudspeakers
- - 2058132
Extension loud speaker
- - 2896737
Tubular speaker housing
- - 2905259
Electroacoustic tone modifying systems for stringed musical instruments
- - 3080785
Inventors:
Mitchell, Lawrence H.
Publication Date:
07/23/1968
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Export Citation:
Assignee:
AMERICAN DISTRICT TELEGRAPH CO
Primary Class:
Other Classes:
381/338, 181/153, 181/148
International Classes:
H04R1/20; H04R5/02
Foreign References:
| AU143597B |