Nasal breathing piece

Details Nasal breathing piece Nasal breathing piece

1987-11-16

1989-05-02

Burke, Wallace R.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03009629

REFERENCES:
patent: D237219 (1975-10-01), Kattwinkel
patent: 2295321 (1942-09-01), Anderson
patent: 2572254 (1951-10-01), Folberth
patent: 3643660 (1972-02-01), Hudson et al.
patent: 4367735 (1983-01-01), Dali
patent: 4641647 (1987-02-01), Behan
patent: 4753233 (1988-06-01), Grimes

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