Granted Patent
Utility
US 6,127,733 · App. 09/034,697
Check pattern for via-hole opening examination
Inventor:
Yasushi Kinoshita
Patented Case
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Granted: Oct 3, 2000
Filed: Mar 4, 1998
Inventor
Yasushi Kinoshita
Assignee (at issue)
NEC CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.