Granted Patent
Utility
US 4,397,939 · App. 06/330,579
Method of using a positive electron beam resist medium
Inventor:
Kurt B. Kilichowski
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Dec 14, 1981
Inventor
Kurt B. Kilichowski
Assignee (at issue)
RCA 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.