Gas mask coupled to monolithic member with speech membrane

Details Gas mask coupled to monolithic member with speech membrane Gas mask coupled to monolithic member with speech membrane

1988-11-17

1990-09-18

Hindenburg, Max

Surgery

Respiratory method or device

Means for transmitting, or facilitating, voice communication...

12820524, 12820628, 128912, A62B 1808

Patent

active

049571060

ABSTRACT:
Gas mask mainly composed of an inlet and outlet part (1) with possibly a speaking membrane (9), fastening devices (2) for securing the inlet and outlet part (1) before the mouth and nose orifices and a filter connection part (3), which is rotatable towards the inlet and outlet part.

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Webster's Dictionary, 1984, p. 766.

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