Patent
   D390949
Priority
Dec 30 1996
Filed
Dec 30 1996
Issued
Feb 17 1998
Expiry
Feb 17 2012
Assg.orig
Entity
unknown
2
3
n/a
The ornamental design for a 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 bottom view of the embodiment of FIG. 1;

FIG. 3 is a left side view of the embodiment of FIG. 1;

FIG. 4 is a front 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. 1.

Fong, Milton A., Hapgood, Mark R., Semyanko, Ivan

Patent Priority Assignee Title
D414859, Nov 27 1998 Alstom Technology Ltd Single-piece grate bar key for stokers feeding steam generator furnaces
D636864, Dec 17 2007 Grate bar
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
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 30 1996Combustion Engineering, Inc.(assignment on the face of the patent)
May 19 1997FONG, MILTON A COMBUSTION ENGINEERING, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0085570269 pdf
May 19 1997HAPGOOD, MARK R COMBUSTION ENGINEERING, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0085570269 pdf
May 19 1997SEMYANKO, IVANCOMBUSTION ENGINEERING, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0085570269 pdf
May 06 2000COMBUSTION ENGINEERING, INC ABB ALSTOM POWER, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0115900337 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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