Patent
   D488486
Priority
Mar 14 2003
Filed
Mar 14 2003
Issued
Apr 13 2004
Expiry
Apr 13 2018
Assg.orig
Entity
unknown
4
5
n/a
The ornamental design for a dual coil fitting, as shown and described.

FIG. 1 is a perspective view of the fitting;

FIG. 2 is a typical front view of the fitting;

FIG. 3 is a typical side view of the fitting;

FIG. 4 is a bottom view of the fitting;

FIG. 5 is a top view of the fitting;

FIG. 6 is a perspective view of a second embodiment of the fitting;

FIG. 7 is a typical front view of the second embodiment of the fitting;

FIG. 8 is a typical side view of the second embodiment of the fitting;

FIG. 9 is a bottom view of the second embodiment of the fitting; and

FIG. 10 is a top view of the second embodiment of the fitting.

Hibbs, John C.

Patent Priority Assignee Title
11892201, Mar 15 2013 Installation apparatus/tool for tubular geothermal heat exchanger systems and methods
9188368, Feb 04 2009 DESANTIS, BROOKE ERIN Geothermal flexible conduit loop single pass installation system for dense soils and rock
9897347, Mar 15 2013 Screw-in geothermal heat exchanger systems and methods
D648835, Apr 16 2010 Charter Plastics, Inc. Geothermal U-bend socket fusion fitting
Patent Priority Assignee Title
4538673, May 02 1984 Geo-Systems, Inc. Drilled well series and paralleled heat exchange systems
5329992, Feb 16 1993 Prefabricated ground coil assembly
5533356, Nov 09 1994 Phillips Petroleum Company In-ground conduit system for geothermal applications
5639184, Nov 09 1994 Phillips Petroleum Company In-ground conduit system for geothermal applications
5642964, Nov 09 1994 Phillips Petroleum Company In-ground conduit system for geothermal applications
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 28 2003HIBBS, JOHN C Centennial Plastics, LLCASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0140700175 pdf
Mar 14 2003Centennial Platstics, LLC(assignment on the face of the patent)
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