Nasal mask

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of a nasal mask showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2858828 November 1958 Matheson
4573463 March 4, 1986 Hall
4601287 July 22, 1986 Royce, Jr.
4637387 January 20, 1987 Hall
5143061 September 1, 1992 Kaimer
Other references
  • Drawing (FIGS. 1-6) of a prior art mask of Mr. Andrew Mitchell (circa 1990).
Patent History
Patent number: D333015
Type: Grant
Filed: Dec 2, 1991
Date of Patent: Feb 2, 1993
Assignee: Lifecare International, Inc. (Lafayette, CO)
Inventors: Robert B. Farmer (Boulder, CO), R. Scott St. John (Golden, CO)
Primary Examiner: Kay H. Chin
Attorney: W. Scott Carson
Application Number: 7/801,175
Classifications
Current U.S. Class: D29/8; D29/7