Protective helmet

Details Protective helmet Protective helmet

1998-07-14

2001-03-13

McInroy, Ruth (Department: 2914)

Equipment for safety, protection, and rescue

Body restraint or protective covering

Cranial

Design Patent

active

D0439021

CLAIM:
I claim the ornamental design for a protective helmet, as shown and described.

REFERENCES:
patent: D. 180092 (1957-04-01), McMurry
patent: D. 253197 (1979-10-01), Jarvinen
patent: D. 256851 (1980-09-01), Knadle et al.
patent: D. 324115 (1992-02-01), Brooks
patent: D. 330951 (1992-11-01), Kamata
patent: D. 331645 (1992-12-01), Gallet
patent: 5522749 (1996-06-01), McNaughton
patent: 5915537 (1999-06-01), Dallas et al.
patent: 5915538 (1999-06-01), Basson et al.

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