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Patent
   D271711
Priority
May 26 1981
Filed
May 26 1981
Issued
Dec 06 1983
Expiry
Dec 06 1997
Inventors
Stewart, A…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
2
References
5
Maint.:
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 front elevational view thereof.

FIG. 3 is a side elevational view thereof.
INVENTORS:

Stewart, Allen L.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D333516, Aug 15 1990 Combined heat shield and blower for dispersing heat from a wood burning stove
D613841, Apr 03 2009 Delphi Technologies, Inc. Heat exchanger
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
227171,
3190282,
4164931, Oct 19 1976 Thermal deflector
FR2403519,
FR493543,
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