Patent
   D414859
Priority
Nov 27 1998
Filed
Nov 27 1998
Issued
Oct 05 1999
Expiry
Oct 05 2013
Assg.orig
Entity
unknown
2
7
n/a
The ornamental design for single-piece grate bar key for stokers feeding steam generator furnaces, as shown and described.

FIG. 1 is a plan view of one form of the invention.

FIG. 2 is a front view of the embodiment of FIG. 1.

FIG. 3 is a bottom view of the embodiment of FIG. 1.

FIG. 4 is a left side view of the embodiment of FIG. 1.

FIG. 5 is a right side view of the embodiment of FIG. 1; and,

FIG. 6 is a sectional view taken along the line 6--6 of FIG. 3.

Hapgood, Mark R., Semyanko, Ivan, Mann, Jeffrey S.

Patent Priority Assignee Title
D636864, Dec 17 2007 Grate bar
D776801, Jun 24 2014 Kobe Steel, Ltd Heat exchanger tube
Patent Priority Assignee Title
5282741, Jan 31 1992 Fuller Company Grate plate
5497711, Apr 20 1995 Southern Alloy Corporation Grate plate
5575642, Dec 01 1995 The Carondelet Corporation; CARONDELET CORPORATION, THE Grate plate
D269806, Mar 30 1981 Vermont Castings, Inc. Warming shelf for a parlor stove
D390949, Dec 30 1996 Alstom Technology Ltd Grate bar key for stokers feeding steam generator furnaces
D391633, Dec 30 1996 Alstom Technology Ltd Multi-piece wide stoker key for stokers feeding steam generator furnaces
D391634, Dec 30 1996 Alstom Technology Ltd One piece wide stoker key for stokers feeding steam generator furnaces
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 06 2000COMBUSTION ENGINEERING, INC ABB ALSTOM POWER INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0107850407 pdf
Jun 22 2000ABB ALSTOM POWER INC ALSTOM POWER INC CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0115750178 pdf
Jun 08 2011ALSTOM POWER INC ,Alstom Technology LtdASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0264150410 pdf
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