Patent
   D498771
Priority
Mar 14 2003
Filed
Mar 14 2003
Issued
Nov 23 2004
Expiry
Nov 23 2018
Assg.orig
Entity
unknown
3
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; and,

FIG. 5 is a top view 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
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 0140680994 pdf
Mar 14 2003Centennial Plastics, LLC(assignment on the face of the patent)
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