Title:
Ear plug
United States Patent 2876767
Inventors:
Nathan, Wasserman
Publication Date:
03/10/1959
Export Citation:
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Assignee:
Nathan, Wasserman
Primary Class:
128/865
Other Classes:
604/99.02, D24/106
International Classes:
A61F11/10; A61F11/00
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US Patent References:
1016877N/A
Foreign References:
GB188503239A
DE268345C
DE837297C