Title:
Respiratory device
United States Patent 2599521


Inventors:
Berman, Robert A.
Application Number:
US9668949A
Publication Date:
06/03/1952
Filing Date:
06/02/1949
Assignee:
Berman, Robert A.
Primary Class:
International Classes:
A61M16/04
View Patent Images:
US Patent References:
2127215Expansible respiratory airway1938-08-16
1661069Method and apparatus for making strip rubber1928-02-28
1270565N/A1918-06-25
Foreign References:
GB105038A1917-03-29