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APPLIC MECANIQUES ET CHIMIQUES
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APPLIC MECANIQUES ET CHIMIQUES
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Publication of FR860184ApublicationCriticalpatent/FR860184A/fr
A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
A62B23/00—Filters for breathing-protection purposes
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FR860184D1939-06-161939-06-16Perfectionnements apportés aux moyens de protection contre les poussières, les fumées, les brouillards et les gaz
ExpiredFR860184A
(fr)
Perfectionnements apportés aux appareils de protection contre les gaz de guerre, les poussières et les brouillards, et aux moyens de fabrication de ces appareils