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			 The ornamental design for a combined power source and tool holder, as shown and described.  | 
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FIG. 1 is a top plan view of a combined power supply and tool holder incorporating the new design.
FIG. 2 is a right side elevation view thereof.
FIG. 3 is a front elevation view thereof.
FIG. 4 is a left side elevation view thereof.
FIG. 5 is a rear elevation view thereof.
FIG. 6 is a bottom plan view thereof.
FIG. 7 is a perspective view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Jun 26 1981 | Pace Incorporated | (assignment on the face of the patent) | / | |||
| Jun 26 1981 | SYLVIA, FRANK | Pace Incorporated | ASSIGNMENT OF ASSIGNORS INTEREST | 003897 | /0550 | |
| Mar 26 1985 | PACE INCORPORATED, A CORP OF DELAWARE | PACE, INCORPORATED, A CORP OF MARYLAND | MERGER SEE DOCUMENT FOR DETAILS 5-20-85 | 004489 | /0140 | 
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