Breathing apparatus for divers
United States Patent 2839053
US Patent References:
/0439093.html
- - 0439093

Diving mask and apparatus
- - 2303155


Inventors:
Lorenz, Robert L.
Publication Date:
06/17/1958
View Patent Images:
Download PDF 2839053 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
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
Foreign References:
GB439183A
GB663202A
FR1023404A