Patent
   D350490
Priority
Oct 08 1992
Filed
Apr 07 1993
Issued
Sep 13 1994
Expiry
Sep 13 2008
Assg.orig
Entity
unknown
9
3
n/a
The ornamental design for semiconductor wafer testing apparatus, as shown and described.

FIG. 1 is a top, front and right side perspective view of a semiconductor wafer testing apparatus showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a bottom plan view thereof.

Takao, Itaru

Patent Priority Assignee Title
D383683, Apr 25 1996 Tokyo Electron Limited Wafer prober
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D989144, May 14 2021 HITACHI HIGH-TECH CORPORATION Apparatus for evaluating semiconductor substrate
D989830, May 14 2021 HITACHI HIGH-TECH CORPORATION Semiconductor substrate transfer apparatus
D989831, May 14 2021 HITACHI HIGH-TECH CORPORATION Apparatus for evaluating semiconductor substrate
ER7490,
ER8606,
Patent Priority Assignee Title
5141212, Apr 08 1991 KIMBLE, ALVIN Vacuum chuck with foam workpiece-supporting surface
5264069, May 09 1990 G. M. Pfaff Aktiengesellshcaft Device for joining a two-dimensional compound workpiece
D323628, Apr 25 1989 Tokyo Electron Limited Semiconductor wafer measuring instrument
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Apr 07 1993Tokyo Electron Kabushiki Kaisha(assignment on the face of the patent)
Apr 07 1993Tokyo Electron Yamanashi Kabushiki Kaisha(assignment on the face of the patent)
Jun 03 1993TAKAO, ITARUTokyo Electron Kabushiki KaishaASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0067420474 pdf
Jun 03 1993TAKAO, ITARUTokyo Electron Yamanashi Kabushiki KaishaASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0067420474 pdf
Mar 24 2001Tokyo Electron Yamanashi Kabushiki KaishaTOKYO ELELCTRON KABUSHIKI KAISHAASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0116630368 pdf
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