MOUTHGUARD WITH COMPRESSIBLE CHAMBER IN OUTER FLANGE
United States Patent 3505995
US Patent References:
Dental device
- - 1934688

Mouthpiece
- - 2702032

Mouthguard
- - 3223085

Mouthpiece
- - 3250272


Inventors:
Greenberg, Samuel
Publication Date:
04/14/1970
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Assignee:
Greenberg, Samuel
Primary Class:
128/862
Other Classes:
433/37
International Classes:
A63B71/08; A61F5/56




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