Title:
METHOD AND DEVICE FOR INDICATING TIME OF ENTIRE CONSUMPTION OF ORGANIC VAPOR*GAS BREATHING MASK CARTRIDGE
Document Type and Number:
Japanese Patent JPS5385993
Kind Code:
A
Inventors:
JIYON EE JIYONZU
Application Number:
JP15675977A
Publication Date:
July 28, 1978
Filing Date:
December 27, 1977
Export Citation:
Assignee:
AMERICAN OPTICAL CORP
International Classes:
A62B9/00; A62B18/08; B01D53/44; B01D53/81; B01J20/28; G01N21/77; G01N21/78; (IPC1-7): A62B18/08