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			 The ornamental design for a computer mainframe, as shown.  | 
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FIG. 1 is a front perspective view of a computer mainframe showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
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| D667401, | Feb 07 2011 | SARTORIUS LAB INSTRUMENTS GMBH & CO KG | Computer | 
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Sep 07 2000 | LIN, CHUN-HSUN | Enlight Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011105 | /0174 | |
| Sep 07 2000 | CHEN, CHUN-PU | Enlight Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011105 | /0174 | |
| Sep 22 2000 | Enlight Corporation | (assignment on the face of the patent) | / | 
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