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The ornamental design for a programmable logic controller, as shown and described. |
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FIG. 1 is a front elevational view of a programmable logic controller showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a front, left and bottom perspective view thereof; and,
FIG. 8 is a perspective view thereof as seen from the rear and upper right.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 14 1994 | NAKAI, TATSUNOBY | Idec Izumi Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 006943 | /0146 | |
| Mar 29 1994 | Idec Izumi Corporation | (assignment on the face of the patent) | / |
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