Title:
Headphone assembly
United States Patent 3272926
Inventors:
Falkenberg, Gustave F.
Publication Date:
09/13/1966
Export Citation:
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Assignee:
DIMENSIONAL PRODUCTS INC
Primary Class:
381/372
Other Classes:
381/370, D14/205
International Classes:
H04R1/10; H04R1/10
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US Patent References:
2989598Hard shell liquid seal earmuff with isolated inner close coupling ear shell