Title:
Tooth guard
United States Patent 2521039
US Patent References:
/1146264.html
- - 1146264

Respirator
- - 1674336


Inventors:
Carpenter, Victor H.
Publication Date:
09/05/1950
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Assignee:
Carpenter, Victor H.
Primary Class:
128/861
International Classes:
A63B71/08
Foreign References:
DE551270C