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Title:
Under water respirator masks
United States Patent 2725876
Inventors:
Andre, Maille
Application Number:
US29792152A
Publication Date:
12/06/1955
Filing Date:
07/09/1952
Assignee:
Andre, Maille
Primary Class:
International Classes:
B63C11/16
View Patent Images:
US Patent References:
2362775Lifesaving headgear1944-11-14
2362240Breathing device1944-11-07
2317237Swimmer's mask1943-04-20
Foreign References:
FR443802A1912-10-03