Granted Patent
Utility
US 5,308,682 · App. 07/955,027
Alignment check pattern for multi-level interconnection
Inventor:
Takenori Morikawa
Patented Case
View Patent ↗
Granted: May 3, 1994
Filed: Oct 1, 1992
Inventor
Takenori Morikawa
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.