Title:
Anti-mouth-breathing device
United States Patent 1339865


Inventors:
Rothenberger, John W.
Application Number:
US30057419A
Publication Date:
05/11/1920
Filing Date:
05/29/1919
Assignee:
Rothenberger, John W.
Primary Class:
Other Classes:
602/74, 602/902
International Classes:
A61F5/56
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