Title:
Breathing apparatus
United States Patent 2854001


Inventors:
Francois, Humblet
Application Number:
US51023055A
Publication Date:
09/30/1958
Filing Date:
05/23/1955
Assignee:
Francois, Humblet
Primary Class:
Other Classes:
128/204.26, 128/204.29, 128/205.22, 137/908
International Classes:
A62B7/00; A62B7/02; B63C11/22
View Patent Images:
Foreign References:
CH253658A1948-03-15
FR976590A1951-03-20