Title:
Breathing apparatus for swimmers
United States Patent 1445010

Inventors:
Feinberg, William S.
Publication Date:
02/13/1923
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Assignee:
Feinberg, William S.
Primary Class:
128/201.110
Other Classes:
128/207.180, 128/201.180
International Classes:
A62B9/06; B63C11/20; A62B9/00; B63C11/02