SEMISPHERICAL LOUDSPEAKER
United States Patent 3435910
US Patent References:
Loud-speaker
- - 1755636

Moving coil loud-speaker
- - 2615995

Loudspeaker
- - 3135349

Speaker device
- - 3170538


Inventors:
Lahti, Uolevi L.
Publication Date:
04/01/1969
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Assignee:
Uolevi, Lahti L.
Primary Class:
181/152
Other Classes:
181/153
International Classes:
H04R1/02; H04R1/24; H04R1/22; G10K13/00; H04R7/16




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