Title:
SOUND TUBE HEAD SET EAR CUSHION AND AMBIENT NOISE PLUG
United States Patent 3539031
Inventors:
Scanlon, Thomas Albert
Publication Date:
11/10/1970
Export Citation:
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Assignee:
Thomas, Albert Scanlon
Primary Class:
181/129
Other Classes:
D14/205
International Classes:
A61B7/02; A61B7/00
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