Diving helmet

Details Diving helmet Diving helmet

1990-06-12

1992-12-15

Word, A. Hugo

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03318192

REFERENCES:
patent: D168027 (1953-01-01), Avant
patent: D181887 (1958-01-01), Stuart et al.
patent: D214862 (1969-08-01), Jones
patent: D227196 (1973-06-01), Onswold
patent: D242881 (1977-01-01), Jones
patent: D246271 (1977-11-01), Cerniway et al.
patent: D261073 (1981-10-01), Spruill et al.
patent: D320868 (1991-10-01), Kumagai et al.
Hartley's Undersea Walk, presumably 1987.

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