Respiration mask

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Description

FIG. 1 is a side elevational view of a respiration mask showing my new design,

FIG. 2 is a front plan view of the respiration mask of FIG. 1, and

FIG. 3 is a back plan view of the respiration mask of FIGS. 1 and 2.

Referenced Cited
U.S. Patent Documents
D131556 March 1942 Karabin et al.
D231803 June 1974 Huddy
D239469 April 1976 Halldin et al.
D247982 May 23, 1978 Huddy
2931356 April 1960 Schwarz
3315674 April 1967 Bloom et al.
Other references
  • Wilson Industrial Safety Cat., 3/1/57, p. 48, Item Respirator, Style No. 1.
Patent History
Patent number: D266196
Type: Grant
Filed: Mar 4, 1980
Date of Patent: Sep 14, 1982
Assignee: Sunstroms Respiratorer AB
Inventor: Per O. Sundstrom (Lidingo)
Primary Examiner: Bernard Ansher
Law Firm: Beveridge, DeGrandi & Kline
Application Number: 6/127,155
Classifications
Current U.S. Class: D29/8
International Classification: D2902; D2402;