Emergency back-up underwater breathing apparatus

Details Emergency back-up underwater breathing apparatus Emergency back-up underwater breathing apparatus

1978-04-20

1979-04-17

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2902

Patent

active

D02516225

REFERENCES:
patent: D245121 (1977-07-01), Christianson
patent: D246671 (1977-12-01), Cerniway
patent: 2931057 (1960-04-01), Vilarem
patent: 3045671 (1962-07-01), Updegraff
patent: 3776227 (1973-12-01), Pitesky
patent: 4019507 (1977-04-01), Oetjen et al.

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