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			 The ornamental design for a center speaker box, as shown. 
			  
			  
			  
			  
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FIG. 1 is a perspective view of a center speaker box showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
Kang, Keith Tan Chee, Kok, Terence Loh Tze
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Mar 11 2004 | KANG, KEITH TAN CHEE | KONINKLIJKE PHILIPS ELECTRONICS, N V | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015188 | /0182 | |
| Mar 11 2004 | KOK, TERENCE LOH TZE | KONINKLIJKE PHILIPS ELECTRONICS, N V | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015188 | /0182 | |
| Apr 05 2004 | Koninklijke Philips Electronics N.V. | (assignment on the face of the patent) | / | 
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