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			   The ornamental design for "cover plate of head rail of vertical blind," as shown.     
    
    
    
    
    
    
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FIG. 1 shows a perspective view of the present design.
FIG. 2 shows a right side elevational view of the present design.
FIG. 3 shows a top plan view of the present design.
FIG. 4 shows a front elevational view of the present design.
FIG. 5 shows a bottom plan view of the present design.
FIG. 6 shows a left side elevational view of the present design; and,
FIG. 7 shows a rear elevational view of the present design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Nov 05 2003 | MING, NIEN | NIEN MADE ENTERPRISE CO LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014977 | /0563 | |
| Nov 18 2003 | Nien Made Enterprise Co., Ltd. | (assignment on the face of the patent) | / | 
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