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The ornamental design for a fireplace heat exchanger, as shown and described. |
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FIG. 1 is a front elevational view of a fireplace heat exchanger, showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a perspective view thereof.
| Patent | Priority | Assignee | Title |
| D665898, | Feb 02 2012 | Craig D., Pless | Andiron |
| Patent | Priority | Assignee | Title |
| 4010729, | Apr 02 1975 | Joglex Corporation | Fireplace furnace |
| 4170217, | Jul 08 1977 | Andirons having rear end locking means | |
| 4271814, | Apr 29 1977 | Heat extracting apparatus for fireplaces | |
| CA47387, | |||
| D253067, | Aug 15 1977 | Caradon Mira Limited | Fireplace heat exchanger |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 04 1981 | DAVIDSON, KEITH J | JO-AAR DEVELOPMENTS LIMITED | ASSIGNMENT OF ASSIGNORS INTEREST | 003929 | /0089 | |
| Aug 07 1981 | 432698 Ontario Ltd. | (assignment on the face of the patent) | / | |||
| Apr 05 1983 | J0-AAR DEVELOPMENTS LIMITED | 432698 ONTARIO LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 004123 | /0046 |
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