Granted Patent
Utility
US 5,396,133 · App. 08/130,309
High speed CMOS current switching circuits
Inventor:
Zhong Zhang
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Oct 1, 1993
Inventor
Zhong Zhang
Assignee (at issue)
Cirrus Logic Inc.
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.