Breathing mask

Details Breathing mask Breathing mask

1995-09-27

1997-09-09

Zarfas, Louis S.

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Article for the introduction, removal or collection of fluids

2102

Patent

active

D03835375

REFERENCES:
patent: 1142990 (1915-06-01), Stern
patent: 1292096 (1919-01-01), Schwartz
patent: 1946334 (1934-02-01), Schwartz
patent: 2070754 (1937-02-01), Schwartz
patent: 2578007 (1951-12-01), Hill
patent: 3216415 (1965-11-01), Littleton
patent: 3757777 (1973-09-01), Kaufman
patent: 3861381 (1975-01-01), Witman et al.
patent: 4600002 (1986-07-01), Maryyanck et al.
patent: 4628927 (1986-12-01), Ward
patent: 5035006 (1991-07-01), Hetz et al.

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