Ear protector

Details Ear protector Ear protector

1990-07-12

1992-11-17

Word, A. Hugo

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03311309

REFERENCES:
patent: D166313 (1952-04-01), Hussey
patent: 227364 (1880-05-01), Kleinert
patent: D254876 (1980-05-01), Reitenga et al.
patent: 1010248 (1911-11-01), French
patent: 1468556 (1923-09-01), Camp et al.
patent: 1619772 (1927-03-01), Thompson
patent: 2184996 (1939-12-01), Jacobs
patent: 2444251 (1948-06-01), Goldman
patent: 2727245 (1955-12-01), Suggs

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