Face mask

Equipment for safety – protection – and rescue – Fire extinguisher or casing therefor – Portable or hand held

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D03239080

REFERENCES:
patent: D285496 (1986-09-01), Berman
patent: D293613 (1988-01-01), Wingler
patent: D300473 (1989-03-01), Roush
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patent: 2830584 (1958-04-01), Hollmann et al.
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patent: 2931356 (1960-04-01), Schwartz
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patent: 3315674 (1967-04-01), Bloom et al.
patent: 3805782 (1974-04-01), Welch
patent: 3908648 (1975-09-01), McCosker
patent: 3918448 (1975-11-01), McCosker
patent: 4062357 (1977-12-01), Laerdal
patent: 4195629 (1980-04-01), Halford

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