Window mounted heat exchange unit

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Description

FIG. 1 is a perspective view of the window mounted heat exchange unit embodying the design of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a side elevational view thereof;

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

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
7766 June 1877 Silver
1417987 May 1922 Griffith
3049113 August 1962 Northwood et al.
4240401 December 23, 1980 Chesnut et al.
4850332 July 25, 1989 Sivonen
4878478 November 7, 1989 Johnson
4941451 July 17, 1990 Gilham
Patent History
Patent number: D345598
Type: Grant
Filed: Aug 7, 1991
Date of Patent: Mar 29, 1994
Inventors: Michael R. Cartwright (Sand Springs, OK), McKinley James (Sand Springs, OK)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Attorney: Terry M. Gernstein
Application Number: 7/741,166
Classifications
Current U.S. Class: Fireplace Or Solid Fuel Heating Stove (25) (D23/343)