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The ornamental design for a heat exchanger, as shown. |
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FIG. 1 is a perspective view of a heat exchanger, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is an end elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is an elevational view of the end opposite that shown in FIG. 3;
FIG. 6 is a bottom plan view thereof; and
FIG. 7 is a top plan view thereof.
| Patent | Priority | Assignee | Title |
| D352550, | Nov 08 1993 | Compression Coolers, Inc. | Industrial air cooled heat exchanger |
| Patent | Priority | Assignee | Title |
| 3896992, | |||
| 4078602, | Dec 17 1976 | Olla Enterprises, Inc. | Heat exchanger for recovering waste heat |
| 4303122, | Aug 16 1979 | ENTEC Products Corporation | Flue heat recovery device |
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