Granted Patent
Utility
US 4,752,591 · App. 07/062,309
Self-aligned contacts for bipolar process
Inventor:
Bruce A. Beitman
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Jun 15, 1987
Inventor
Bruce A. Beitman
Assignee (at issue)
HARRIS 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.