Combined respirator mouthpiece and filter

Details Combined respirator mouthpiece and filter Combined respirator mouthpiece and filter

1989-08-01

1992-04-28

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Pulmonary

D24162

Patent

active

D03257800

REFERENCES:
patent: 3773043 (1973-11-01), Wachter
patent: 4071026 (1978-01-01), Bevins

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