Title:
Protective mouthpiece
United States Patent 2847003
Inventors:
Helmer, Norman D.
Easton, Fred H.
Publication Date:
08/12/1958
Export Citation:
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Assignee:
Helmer
Primary Class:
128/861
Other Classes:
2/9, 2/424
International Classes:
A63B71/08; A63B71/08
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US Patent References:
2521039Tooth guard