Breathing apparatus
United States Patent 2348074

Inventors:
Lambertsen, Christian J.
Publication Date:
05/02/1944
View Patent Images:
Download PDF 2348074 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Lambertsen, Christian J.
Primary Class:
128/205.170
Other Classes:
128/205.280, 128/205.250
International Classes:
A62B7/10; B63C11/24; B63C11/02