Granted Patent
Utility
US 4,239,790 · App. 06/075,162
Method of defining a photoresist layer
Inventor:
Wolfram A. Bosenberg
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Sep 12, 1979
Inventor
Wolfram A. Bosenberg
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.