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Patent
   D300772
Priority
Sep 04 1986
Filed
Sep 04 1986
Issued
Apr 18 1989
Expiry
Apr 18 2003
Inventors
Powell, Lo…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
0
References
3
Maint.:
n/a
The ornamental design for a friction furnace, as shown and described.

FIG. 1 is a top plan view of a friction furnace showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof; and

FIG. 5 is a rear elevational view thereof.
INVENTORS:

Powell, Louis D.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4365614, Mar 31 1980 Friction space heater
4407449, Nov 18 1980 Klockner-Humboldt-Deutz AG System for heating the service cabin of a machine operated by an internal cumbustion engine
4412651, Apr 26 1982 Heating unit
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