Granted Patent
Utility
US 4,586,074 · App. 06/532,332
Impurity band conduction semiconductor devices
Inventors:
Maryn G. Stapelbroek, Michael D. Petroff
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Sep 15, 1983
Inventors
Maryn G. Stapelbroek
Michael D. Petroff
Assignee (at issue)
Rockwell International 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.