Breathing mask

Equipment for safety – protection – and rescue – Fire extinguisher or casing therefor – Portable or hand held

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D29 9

Patent

active

D03265340

REFERENCES:
patent: D188301 (1960-06-01), Doak
patent: D320473 (1991-10-01), Mano et al.
patent: 5009225 (1991-04-01), Vrabel

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