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LETRANGE ETS
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Publication of FR867049ApublicationCriticalpatent/FR867049A/fr
A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
A62B18/02—Masks
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FR867049D1940-05-281940-05-28Masque à gaz et son procédé de fabrication
ExpiredFR867049A
(fr)