Hardhat

Details Hardhat Hardhat

1998-05-29

1999-08-03

McInroy, Ruth

Equipment for safety, protection, and rescue

Body restraint or protective covering

Cranial

2902

Patent

active

D04126033

REFERENCES:
patent: D192071 (1962-01-01), Tucker
patent: D205179 (1966-07-01), Miller
patent: D205990 (1966-10-01), Raschke
patent: D215400 (1969-09-01), Sinclair et al.
patent: D218385 (1970-08-01), Bohner
patent: D234411 (1975-03-01), Zuppert
patent: D277425 (1985-02-01), Higginson
patent: D358905 (1995-05-01), Stinson et al.
patent: D370308 (1996-05-01), Nilsson
patent: 2931042 (1960-04-01), Austin
patent: 3280402 (1966-10-01), Scheibchen

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