Open-cycle breathing apparatus
United States Patent 2882895
Inventors:
Roberto, Galeazzi
Publication Date:
04/21/1959
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Assignee:
Roberto, Galeazzi
Primary Class:
Other Classes:
128/204.270
International Classes:
A62B7/04; A62B9/02; B63C11/22; A62B7/00; A62B9/00; B63C11/02
Foreign References:
| FR5115A | ||||
| FR922872A | ||||
| CH284946A | ||||
| FR1078875A |