A - Human Necessities – 62 – B
Patent
A - Human Necessities
62
B
A62B 23/00 (2006.01) A62B 18/00 (2006.01) A62B 18/08 (2006.01)
Patent
CA 2090741
ABSTRACT OF THE DISCLOSURE A face mask assembly having a housing and a replaceable filter mounted in said housing. A fan means draws air into a plenum chamber defined by said housing and said filter for this air to pass into a facial breathing area. An outlet check valve is provided, and a primary filter through which air passes before entering said plenum chamber.
Stern Donald J.
Tryon James A.
Djs&t Limited Partnership
Gowling Lafleur Henderson Llp
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