Protective helmet

Details Protective helmet Protective helmet

1994-07-11

1996-05-28

McInroy, Ruth

Equipment for safety, protection, and rescue

Body restraint or protective covering

Cranial

Patent

active

D03703088

REFERENCES:
patent: D218385 (1970-08-01), Bohner et al.
patent: D234411 (1975-03-01), Zuppert
patent: D240310 (1976-06-01), Sinclair et al.
patent: D277425 (1985-02-01), Higginson
patent: D299765 (1989-02-01), Lewis et al.
patent: D300275 (1989-03-01), Sjogren et al.
Electrical Consultant, Mar.-Apr. 1978, p. 60. "Hat-Com Protective Headgear".

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