Granted Patent
Utility
US 5,445,981 · App. 08/208,753
Method of making shallow trench source EPROM cell
Inventor:
Roger Lee
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Mar 8, 1994
Inventor
Roger Lee
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.