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The ornamental design for a inter-call device for telephone sets, substantially as shown and described. |
FIG. 1 is a front elevational view of a inter-call device for telephone sets 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 perspective view thereof;
The broken line showing of vertical lines on the keyboard in FIGS. 1 and 7 is for illustrative purposes only and forms no part of the claimed design.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jun 16 1986 | YAMAGISHI, HIROSHI | NITSUKO LIMITED, A CORP OF JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 004571 | /0025 | |
Jun 24 1986 | Nitsuko Limited | (assignment on the face of the patent) | / |
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