Oxygen concentrator

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Description

FIG. 1 is a front-right-top perspective view of an oxygen concentrator, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Claims

The ornamental design for an oxygen concentrator, as shown.

Referenced Cited
U.S. Patent Documents
4378982 April 5, 1983 McCombs
4502873 March 5, 1985 Mottram et al.
4545790 October 8, 1985 Miller et al.
D284026 May 27, 1986 McCombs
D284695 July 15, 1986 McCombs
D329288 September 8, 1992 Miller et al.
D412577 August 3, 1999 Mickelson et al.
6212904 April 10, 2001 Arkharov et al.
Patent History
Patent number: D471278
Type: Grant
Filed: May 3, 2002
Date of Patent: Mar 4, 2003
Inventor: Ming-Chuan Cheng (Taichung)
Primary Examiner: Stella Reid
Attorney, Agent or Law Firm: William E. Pelton, Esq.
Application Number: 29/160,159
Classifications
Current U.S. Class: Pulmonary (38) (D24/164)
International Classification: 2401;