Safety helmet

Equipment for safety – protection – and rescue – Body restraint or protective covering – Cranial

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Patent

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D03555089

REFERENCES:
patent: D293496 (1987-12-01), Gentes
patent: D299180 (1989-01-01), Gentes
patent: D299978 (1989-02-01), Chiarella
patent: D300070 (1989-02-01), Broersma
patent: D303851 (1989-10-01), Gentes
patent: D309961 (1990-08-01), Bobrick
patent: D310893 (1990-09-01), Broersma
patent: D316165 (1991-04-01), Gentes et al.
patent: D339427 (1993-09-01), Gentes
patent: 4996724 (1991-03-01), Dextrase
patent: 5007141 (1991-04-01), Gentes
patent: 5123121 (1992-06-01), Broersma
patent: 5231703 (1993-08-01), Garneau

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