Heat exchanger

Description

FIG. 1 is a perspective view of the heat exchanger showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational view of the side opposite that shown in FIG. 1;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left end elevational view thereof; and

FIG. 6 is a right end elevational view thereof.

Referenced Cited
U.S. Patent Documents
D273324 April 3, 1984 Brownlee
2499384 March 1950 Holm et al.
2521369 September 1950 Holm et al.
3438742 April 1969 Grunewald et al.
3825063 July 1974 Cowans
3907028 September 1975 Lawson
Patent History
Patent number: D279704
Type: Grant
Filed: Jun 17, 1982
Date of Patent: Jul 16, 1985
Inventor: David S. Tofte (St. Clair, MN)
Primary Examiner: Catherine E. Kemper
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/389,162
Classifications
Current U.S. Class: D23/136