Respirator cartridge end-of-service life indicator
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United States of America Patent
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-
Jul 23, 1985
Grant Date -
N/A
app pub date -
Oct 19, 1981
filing date -
Oct 19, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Visual indication of respirator cartridge end-of-service life is accomplished with color indicator means particularly designed for long term shelf life and an adaptability to respond to both water soluble and water insoluble organic vapors.
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