Granted Patent
Utility
US 4,868,921 · App. 07/152,703
High voltage integrated circuit devices electrically isolated from an integrated circuit substrate
Inventor:
Michael Adler
Patented Case
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Granted: Sep 19, 1989
Filed: Feb 5, 1988
Inventor
Michael Adler
Assignee (at issue)
General Electric Company
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.