Patent
   D253067
Priority
Aug 15 1977
Filed
Aug 15 1977
Issued
Oct 02 1979
Expiry
Oct 02 1993
Assg.orig
Entity
unknown
12
3
n/a
The ornamental design for a fireplace heat exchanger, as shown and described.

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

FIG. 2 is a side elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

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

FIG. 7 is a bottom plan view thereof.

The conventional cord has been shown fragmentarily in FIGS. 1 and 2 for ease of illustration.

Hartley, Ronald C.

Patent Priority Assignee Title
7591301, Sep 13 2005 Johnson Matthey Public Limited Company Low-cost high-temperature heat exchanger
7594326, Sep 13 2005 Johnson Matthey Public Limited Company Method for making a low-cost high-temperature heat exchanger
8047272, Sep 13 2005 Johnson Matthey Public Limited Company High-temperature heat exchanger
D263070, Mar 26 1979 Pacific Fireplace Furnishings, Inc. Low profile forced air fireplace furnace
D263418, Mar 26 1979 Pacific Fireplace Furnishings, Inc. Low profile fireplace heat exchanger
D263419, Mar 26 1979 Pacific Fireplace Furnishings, Inc. Casting for low profile fireplace heat exchanger
D273323, Feb 09 1981 432698 ONTARIO LTD Fireplace heat exchanger
D330076, Mar 12 1991 Fireplace heat exchange unit
D560276, Sep 13 2005 Johnson Matthey Public Limited Company Heat exchanger
D570988, Jan 18 2008 Therma-Stor LLC Heat exchanger
D579101, May 30 2007 Johnson Matthey Public Limited Company Heat exchanger
D665898, Feb 02 2012 Craig D., Pless Andiron
Patent Priority Assignee Title
4010729, Apr 02 1975 Joglex Corporation Fireplace furnace
4049196, Mar 08 1976 Fireplace heater, circulator, and humidifier system
4060196, Apr 12 1976 Heat extractor for stoves
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 21 1986WALKER, CROSWELLER & COMPANY, LIMITEDCaradon Mira LimitedCHANGE OF NAME SEE DOCUMENT FOR DETAILS 0046530643 pdf
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