Respirator face mask

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Article for the introduction – removal or collection of fluids

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Details

D241103, D241104, 2902

Patent

active

D03823415

REFERENCES:
patent: D271246 (1983-11-01), Matheson et al.
patent: D286213 (1986-10-01), Maryyanek et al.
patent: D351226 (1994-10-01), Parvatharaj
patent: 4603692 (1986-08-01), Montesi
patent: 4886058 (1989-12-01), Brostrom et al.
patent: 4960121 (1990-10-01), Nelson et al.
patent: 5062421 (1991-11-01), Burns et al.
patent: 5505197 (1996-04-01), Scholey

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