Title:
Underwater breathing apparatus
United States Patent 2823670


Inventors:
Page, Rory E.
Application Number:
US41919554A
Publication Date:
02/18/1958
Filing Date:
03/29/1954
Assignee:
HOPE PAGE ENGINEERING CORP
Primary Class:
Other Classes:
128/204.26
International Classes:
B63C11/22
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US Patent References:
Foreign References:
GB372638A1932-05-12
DE702705C1941-02-14
DE893295C1953-10-15