Title:
Ear plug and sound absorbing material construction
United States Patent 2672863
US Patent References:
/1135962.html
- - 1135962

Ear stopper
- - 2246736

Ear protector
- - 2262568

Device for protecting the ear drum
- - 2441866

Ear plug
- - 2446707


Inventors:
Charles, Leight
Publication Date:
03/23/1954
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Assignee:
Charles, Leight
Primary Class:
128/867
International Classes:
A61F11/08; A61F11/00
US Patent References:
2498785Rubber article and method of making same
2568866Frothed rubber sponge containing fibers
Foreign References:
GB188801387A