Ear protector
United States Patent 2574288
US Patent References:
/0886790.html
- - 0886790

/0931768.html
- - 0931768

Acoustic device
- - 1893143

Ear fitting for excluding water or diminishing sound
- - 2070403


Inventors:
Rosenblatt, Maurice C.
Publication Date:
11/06/1951
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Assignee:
Rosenblatt, Maurice C.
Primary Class:
128/864
International Classes:
A61F11/08; A61F11/00
Foreign References:
GB190116313A
DE160587C