Battery powered heated ear covers

Equipment for safety – protection – and rescue – Body restraint or protective covering – Face – mouth – or ear

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D03647102

REFERENCES:
patent: D149150 (1948-03-01), Schwartz
patent: 184006 (1876-11-01), Edgar
patent: D254876 (1980-05-01), Reitenga et al.
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patent: 4538034 (1985-08-01), French
patent: 4670911 (1987-06-01), Dunford
patent: 4791684 (1988-12-01), Schwartz
patent: 4850055 (1989-07-01), Hwang

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