Combined face mask and shield

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

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D241101

Patent

active

D03554856

REFERENCES:
patent: D249072 (1978-08-01), Revoir
patent: D319111 (1991-08-01), Sandel et al.
patent: D327141 (1992-06-01), Hubbard et al.
patent: 2669717 (1954-02-01), Diggs
patent: 4300549 (1981-11-01), Parker
patent: 4606341 (1986-08-01), Hubbard et al.
patent: 4688566 (1987-08-01), Boyce
patent: 4796621 (1989-01-01), Barle et al.
patent: 4920960 (1990-05-01), Hubbard et al.
patent: 5020533 (1991-06-01), Hubbard et al.
patent: 5107547 (1992-04-01), Scheu

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