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The ornamental design for an automatic semiconductor wafer tester, as shown. |
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FIG. 1 is a top and left front perspective view of an automatic semiconductor wafer tester showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Apr 24 1985 | CHOW, MARLAND | PROMETRIX CORPORATION, A A CORP OF CA | ASSIGNMENT OF ASSIGNORS INTEREST | 004418 | /0898 | |
| Apr 26 1985 | Prometrix Corporation | (assignment on the face of the patent) | / | |||
| Feb 25 1994 | PROMETRIX CORPORATION A CA CORP | TENCOR INSTRUMENTS A CA CORP | MERGER SEE DOCUMENT FOR DETAILS | 007289 | /0247 |
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