Granted Patent
Utility
US 4,684,971 · App. 06/243,621
Ion implanted CMOS devices
Inventor:
Richard S. Payne
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Mar 13, 1981
Inventor
Richard S. Payne
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.