Granted Patent
Utility
US 5,451,901 · App. 08/270,126
Transconductance amplifiers and exponential variable gain amplifiers using the same
Inventor:
David R. Welland
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Jul 1, 1994
Inventor
David R. Welland
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.