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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
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D414859, | Nov 27 1998 | Alstom Technology Ltd | Single-piece grate bar key for stokers feeding steam generator furnaces |
D636864, | Dec 17 2007 | Grate bar |
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 30 1996 | Combustion Engineering, Inc. | (assignment on the face of the patent) | / | |||
May 19 1997 | FONG, MILTON A | COMBUSTION ENGINEERING, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008557 | /0269 | |
May 19 1997 | HAPGOOD, MARK R | COMBUSTION ENGINEERING, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008557 | /0269 | |
May 19 1997 | SEMYANKO, IVAN | COMBUSTION ENGINEERING, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008557 | /0269 | |
May 06 2000 | COMBUSTION ENGINEERING, INC | ABB ALSTOM POWER, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011590 | /0337 | |
Jun 22 2000 | ABB ALSTOM POWER INC | ALSTOM POWER INC | CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 011575 | /0178 | |
Jun 08 2011 | ALSTOM POWER INC , | Alstom Technology Ltd | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026415 | /0410 |
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