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The ornamental design for a chairman unit for conference system, as shown. |
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FIG. 1 is a front, right side perspective view showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Oct 13 1992 | JOHANNES GERARD ROBERTUS | U S PHILIPS CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 006341 | /0044 | |
| Nov 13 1992 | U.S. Philips Corporation | (assignment on the face of the patent) | / |
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