Title:
Selective contour retaining mask
United States Patent 2877764


Inventors:
Galleher Jr., Ellis A.
Application Number:
US61597056A
Publication Date:
03/17/1959
Filing Date:
10/15/1956
Assignee:
Galleher Jr., Ellis A.
Primary Class:
International Classes:
A61M16/06; A62B18/02
View Patent Images:
US Patent References:
2749910N/A1956-06-12
2220374Respirator1940-11-05