Granted Patent
Utility
US 5,811,989 · App. 08/967,435
Programmable I/O cell with data conversion capability
Inventor:
W. Alfred Graf
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Nov 11, 1997
Inventor
W. Alfred Graf
Assignee (at issue)
Cypress Semiconductor 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.