Head seal for an anti-dust helmet

Details Head seal for an anti-dust helmet Head seal for an anti-dust helmet

1977-01-07

1978-12-12

Feifer, Melvin B.

Apparel and haberdashery

Footwear

Athletic-type

D0203

Patent

active

D02504960

REFERENCES:
patent: 2641768 (1953-06-01), Pipher
patent: 3241155 (1966-03-01), Phillips
patent: 3774239 (1973-11-01), Kotzar

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