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Patent
   D258410
Priority
Feb 27 1978
Filed
Feb 27 1978
Issued
Mar 03 1981
Expiry
Mar 03 1995
Inventors
Mayo, Carl…
Assg.orig
C. Mayo, I…
Assg.curr
C. Mayo, I…
Entity
unknown
Referenced by
2
References
7
Maint.:
n/a
The ornamental design for a fireplace combustion air duct, as shown.

FIG. 1 is a side elevational view of a fireplace combustion air duct, showing my new design;

FIG. 2 is a front elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.
INVENTORS:

Mayo, Carlos

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D389907, Mar 12 1996 Duct for a toilet bowl ventilation system
D640782, Jan 26 2010 DunnWell, LLC Multi-sump grease containment apparatus
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3190282,
3289667,
3756218,
4020824, Apr 21 1975 The Raymond Lee Organization, Inc. Portable fireplace grate heater
4192286, Dec 27 1977 Heat exchanger
728355,
869775,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 27 1978C. Mayo, Inc.(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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