Granted Patent
Utility
US 5,874,838 · App. 08/664,061
High voltage-tolerant low voltage input/output cell
Inventor:
David B. Rees
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jun 13, 1996
Inventor
David B. Rees
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.