Title:
Respirator apparatus and method
United States Patent 3033195


Inventors:
John, Gilroy
Schlimgen Jr., Lucian G.
Application Number:
US68402857A
Publication Date:
05/08/1962
Filing Date:
09/16/1957
Assignee:
Air, Reduction
Primary Class:
Other Classes:
73/861.53, 128/205.15
International Classes:
A61M16/00
View Patent Images:
Foreign References:
GB767047A1957-01-30