Face mask breathing valve

Details Face mask breathing valve Face mask breathing valve

1998-03-02

1999-08-24

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Article for the introduction, removal or collection of fluids

D241101, 2902

Patent

active

D04131665

REFERENCES:
patent: D347298 (1994-05-01), Japuntich et al.
patent: D347299 (1994-05-01), Bryant et al.
patent: D389239 (1998-01-01), Scholey
patent: 2751904 (1956-06-01), Lewis
patent: 4756308 (1988-07-01), Ryback

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