<p>A disposable valveless chemical cartridge respirator for filtration of vinyl chloride monomer having an end of service life indicator is disclosed.</p>
申请公布号
CA1107452(A)
申请公布日期
1981.08.25
申请号
CA19770289674
申请日期
1977.10.27
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
MCALLISTER, JEROME W.;ORD, JAMES A., JR.;ANDERS, LEON W.;KOHLER, GUNTER A.
