Title:
Acoustic dampening device
United States Patent 1910981
Inventors:
Bescherer, Edwin A.
Publication Date:
05/23/1933
Export Citation:
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
181/201
Other Classes:
178/1, 312/400
International Classes:
H04M1/11; H04M1/11
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