Football helmet with radio equipment

Equipment for safety – protection – and rescue – Fire extinguisher or casing therefor – Portable or hand held

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D03325075

REFERENCES:
patent: D309509 (1990-07-01), Mast
patent: D320476 (1991-10-01), Mele
patent: 3174155 (1965-03-01), Pitman
patent: 3230544 (1966-01-01), Mager
patent: 3283336 (1966-11-01), Critzer
patent: 4357711 (1982-11-01), Drefko
patent: 4370759 (1983-02-01), Zide
patent: 4524461 (1985-06-01), Kostanty
patent: 4833726 (1989-05-01), Shinoda
patent: 4947490 (1990-08-01), Nayden
patent: 5003631 (1991-04-01), Richardson

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