Oxygen concentrator used in home health care

- Litton Systems, Inc.
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Description

FIG. 1 is a front perspective view of the oxygen concentrator used in home health care showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a side elevational view thereof opposite that shown in FIG. 3;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D261676 November 3, 1981 McCombs
D273717 May 1, 1984 McCombs
D284026 May 27, 1986 McCombs
D284695 July 15, 1986 McCombs
D329288 September 8, 1992 Miller et al.
4378982 April 5, 1983 McCombs
4545790 October 8, 1985 Miller et al.
4826510 May 2, 1989 McCombs
5858062 January 12, 1999 McCulloh et al.
Patent History
Patent number: D412577
Type: Grant
Filed: Oct 6, 1997
Date of Patent: Aug 3, 1999
Assignee: Litton Systems, Inc. (Davenport, IA)
Inventors: Sammy K. Mickelson (Bettendorf, IA), Dale L. Selhost (Moline, IL), Kevin G. McCulloh (Davenport, IA), Bradley D. Kreiner (Davenport, IA), Dean A. Cantrill (Bettendorf, IA), Kelly M. Coffield (Davenport, IA), Gary N. Byrd (Donahue, IA)
Primary Examiner: Stella Reid
Attorney: Michael H. Wallach
Application Number: 0/77,898
Classifications
Current U.S. Class: Pulmonary (38) (D24/164)
International Classification: 2404;