Patent
   D292979
Priority
Apr 26 1985
Filed
Apr 26 1985
Issued
Dec 01 1987
Expiry
Dec 01 2001
Assg.orig
Entity
unknown
8
7
n/a
The ornamental design for an automatic semiconductor wafer tester, as shown.

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.

Chow, Marland

Patent Priority Assignee Title
D307724, Jun 25 1987 Kabushiki Kaisha Toshiba Defect inspection device for semiconductors
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D758221, Feb 28 2014 HITACHI HIGH-TECH SCIENCE CORPORATION Thermogravimetric analyzer
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D915914, Nov 29 2018 HITACHI HIGH-TECH SCIENCE CORPORATION Thermogravimetric analyzer
D935424, May 06 2019 Lam Research Corporation Semiconductor wafer processing tool
Patent Priority Assignee Title
4348636, Jul 09 1980 Integrated circuit tester
4520931, Aug 18 1983 Daymarc Corporation Apparatus for reorienting electrically asymmetrical axial lead devices in a sorter/tester
173618,
215120,
D276315, Apr 07 1982 Miles Laboratories, Inc. Spectrophotometer
D282724, Sep 13 1983 Miles Laboratories, Inc. Spectro photometer
D283107, Jul 29 1983 Miles Laboratories, Inc. Reflectance photometer
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 24 1985CHOW, MARLANDPROMETRIX CORPORATION, A A CORP OF CAASSIGNMENT OF ASSIGNORS INTEREST 0044180898 pdf
Apr 26 1985Prometrix Corporation(assignment on the face of the patent)
Feb 25 1994PROMETRIX CORPORATION A CA CORP TENCOR INSTRUMENTS A CA CORP MERGER SEE DOCUMENT FOR DETAILS 0072890247 pdf
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