Granted Patent
Utility
US 4,833,097 · App. 07/150,410
Fabrication of MOS-transistors
Inventors:
Alan L. Butler, Peter Childs
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Apr 4, 1988
Inventors
Alan L. Butler
Peter Childs
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.