Protective mask

Details Protective mask Protective mask

1986-12-02

1989-08-01

Burke, Wallace R.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D29 6

Patent

active

D03026060

REFERENCES:
patent: D214817 (1989-07-01), Widolf
patent: D237220 (1975-10-01), Stackhouse
patent: 3528415 (1967-03-01), Malmin
patent: 4080664 (1978-03-01), Morris et al.
patent: 4296746 (1981-10-01), Mason, Jr. et al.
patent: 4638410 (1987-01-01), Barker
patent: 4764990 (1988-08-01), Markert

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