Pair of earmuffs

Details Pair of earmuffs Pair of earmuffs

1998-10-23

2000-06-27

Zarfas, Louis S.

Equipment for safety, protection, and rescue

Body restraint or protective covering

Face, mouth, or ear

2902

Patent

active

D04273826

REFERENCES:
patent: D235210 (1975-05-01), Hill
patent: D375584 (1996-11-01), Westerdal
patent: D403126 (1998-12-01), Scanlon et al.
patent: 4069512 (1978-01-01), Palmaer
patent: 4944361 (1990-07-01), Lindgren et al.
patent: 5068923 (1991-12-01), Sjoqvist
patent: 5862241 (1999-01-01), Nelson
patent: 5970155 (1999-10-01), Lepalahti
patent: 5996123 (1999-12-01), Leight et al.
Voice Powered system application #3, Multiple Headset Installation, p. 4, from David Clark Company broshure, Jan. 1987.

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