Granted Patent
Utility
US 4,359,609 · App. 06/161,489
Circuit with feedback for controlling the impedance thereof
Inventor:
Russell J. Apfel
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: Jun 20, 1980
Inventor
Russell J. Apfel
Assignee (at issue)
Advanced Micro Devices, 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.