Sports hard hat having an integral audio device

Details Sports hard hat having an integral audio device Sports hard hat having an integral audio device

1991-05-20

1994-01-11

McInroy, Ruth

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03432580

REFERENCES:
patent: D184428 (1959-02-01), Finkelhor
patent: D186759 (1959-12-01), Chick, Jr.
patent: D309512 (1990-07-01), Crow
patent: D321581 (1991-11-01), Li
patent: 2904645 (1959-09-01), Sarles
patent: 2926356 (1960-03-01), Taylor
patent: 3266042 (1966-08-01), Mahoney et al.
patent: 3844840 (1974-10-01), Bender
patent: 3845389 (1974-10-01), Phillips et al.
patent: 3904469 (1975-09-01), Dickstein
patent: 4321433 (1982-03-01), King
patent: 4660230 (1987-04-01), Mayling
patent: 4677694 (1987-07-01), Crow
patent: 4680815 (1987-07-01), Hirsch et al.
patent: 4893356 (1990-01-01), Waters
patent: 5003631 (1991-04-01), Richardson
Radio Shack-1990, .COPYRGT.1989, p. 94, "Item 1".

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