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Title:
Breathing apparatus for divers
Document Type and Number:
United States Patent 2839053
Inventors:
Lorenz, Robert L.
Plaque It!
Sponsored by:
Flash of Genius
Publication Date:
06/17/1958
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Referenced by:
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Assignee:
Lorenz, Robert L.
Primary Class:
128/204.290
Other Classes:
137/908, 128/205.240, 128/206.290
International Classes:
B63C11/18
;
B63C11/22
;
B63C11/02
US Patent References:
0439093
2303155
Diving mask and apparatus
Foreign References:
GB439183A
GB663202A
FR1023404A
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