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The ornamental design for a three-way call detector unit, as shown and described. |
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FIG. 1 is a perspective view of a three-way call detector unit showing my new design;
FIG. 2 is a front elevational view of the three-way call detector unit;
FIG. 3 is a rear elevational view of the three-way call detector unit;
FIG. 4 is a right-hand side elevational view of the three-way call detector unit;
FIG. 5 is a left-hand side elevational view of three-way call detector unit;
FIG. 6 is a top plan view of the three-way call detector unit; and,
FIG. 7 is a bottom view of the three-way call detector unit.
The electrical cord has been shown broken away in FIGS. 3-7 for convenience of illustration.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 18 1993 | CHONG, EDWARD U | Communication Equipment and Engineering Company | ASSIGNMENT OF ASSIGNORS INTEREST | 006509 | /0708 | |
| Feb 24 1993 | Communication Equipment & Engineering Company | (assignment on the face of the patent) | / |
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