Title:
Toxic chemicals mask
United States Patent 3018776


Inventors:
Saitta, Vincent F.
Mcconville, Thomas W.
Application Number:
US74930858A
Publication Date:
01/30/1962
Filing Date:
07/17/1958
Assignee:
Saitta, Vincent F.
Mcconville, Thomas W.
Primary Class:
Other Classes:
128/205.21, 128/206.26, 222/5, D24/110.2
International Classes:
A62B18/08
View Patent Images:
US Patent References:
1917961Protective mask1933-07-11
1878464Mask1932-09-20
1105127N/A1914-07-28
Foreign References:
FR749920A1933-08-01
GB494173A1938-10-21