Title:
Mouthpiece for respiratory apparatus
United States Patent 1592345
Inventors:
Bernhard, Drager Alexander
Publication Date:
07/13/1926
Export Citation:
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Assignee:
Bernhard, Drager Alexander
Primary Class:
128/207.17
Other Classes:
128/206.29
International Classes:
A62B9/06; A62B9/00
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