Title:
Breathing apparatus
United States Patent 3397693
US Patent References:
Breathing apparatus
- - 1628254

Breathing apparatus
- - 3266489

Breathing apparatus
- - 3326212


Inventors:
Ernst, Warncke
Publication Date:
08/20/1968
View Patent Images:
Download PDF 3397693 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Drager, Otto H.
Primary Class:
128/204.280
International Classes:
A62B7/00; A62B7/10; A62B25/00
Foreign References:
GB440932A
IT342699B