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			   The ornamental design for a portion of arithmetic operation control machine for electronic computer, as shown and described.     
    
    
    
    
    
    
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FIG. 1 is a front, top and right side perspective view of portion of arithmetic operation control machine for electronic computer, showing my new design;
FIG. 2 is an enlarged fragmented perspective view thereof, taken along the line II--II in FIG. 1;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a top plan view thereof; the opposite side being a mirror image thereof.
The broken lines are included for the purpose of illustrating environmental structure only and form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Sep 14 2001 | Kabushiki Kaisha Toshiba | (assignment on the face of the patent) | / | |||
| Oct 16 2001 | TANAKA, KEITA | Kabushiki Kaisha Toshiba | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012297 | /0515 | 
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