Inhalation mask

Description

FIG. 1 is a perspective view of an inhalation mask showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a side elevational view thereof, the opposite side elevational view being a mirror image of that shown.

Referenced Cited
U.S. Patent Documents
D236033 July 1975 Dryden
D239469 April 1976 Halldin
D249368 September 12, 1978 Watkins, Jr.
D285496 September 2, 1986 Berman
D293613 January 5, 1988 Wingler
Patent History
Patent number: D300473
Type: Grant
Filed: Apr 25, 1986
Date of Patent: Mar 28, 1989
Assignee: Cavan Corporation (Salt Lake City, UT)
Inventor: Craig R. Roush (Salt Lake City, UT)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Law Firm: Thorpe, North & Western
Application Number: 6/857,781
Classifications
Current U.S. Class: D29/7