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The ornamental design for a heat exchanger for fuel fired furnaces, as shown and described. |
FIG. 1 is a front perspective view of the heat exchanger;
FIG. 2 is a right side elevational view thereof, the left side being a mirror image of that shown;
FIG. 3 is a rear end elevational view thereof;
FIG. 4 is a front end elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
Patent | Priority | Assignee | Title |
6938688, | Dec 05 2001 | Reznor LLC | Compact high efficiency clam shell heat exchanger |
8826901, | Jan 20 2010 | Carrier Corporation | Primary heat exchanger design for condensing gas furnace |
D570988, | Jan 18 2008 | Therma-Stor LLC | Heat exchanger |
D629357, | Apr 19 2010 | Generator | |
D842974, | Feb 27 2017 | TOMTON S R O | Heat exchanger |
Patent | Priority | Assignee | Title |
4164210, | Aug 30 1977 | ENERGY INTERNATIONAL, INC | Pulse combustion system for heating of air |
5042453, | Sep 28 1989 | Rheem Manufacturing Company | Compact, high efficiency heat exchanger for a fuel-fired forced air heating furnace |
5178124, | Aug 12 1991 | Rheem Manufacturing Company | Plastic secondary heat exchanger apparatus for a high efficiency condensing furnace |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 06 1993 | SHELLENBERGER, TIMOTHY J | Rheem Manufacturing Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 006810 | /0154 | |
Dec 10 1993 | Rheem Manufacturing Company | (assignment on the face of the patent) | / |
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