Title:
Louid speaker
United States Patent 2797766
Inventors:
Sullivan, Herbert W.
Publication Date:
07/02/1957
Export Citation:
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Assignee:
DAVID BOGEN & COMPANY INC
Primary Class:
181/151
Other Classes:
181/152, 381/345
International Classes:
H04R1/28; H04R1/42
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US Patent References:
2665459Closure seal
2640556Loud-speaker diaphragm and mounting
2604182Loud-speaker with a tapered horn coupled to the speaker diaphragm
2338262Acoustic horn
2277525Sound amplifier
2231791Process for preserving food
2200297Combined phonograph and radio
2115129Loudspeaker
1755552Driving unit for speakers
1748407Loud-speaker unit
1730532Acoustic transformer
1730531Acoustic transformer
1730528Acoustic transformer
1453305Self-sealing petrol tank or other container
1220669N/A