Granted Patent
Utility
US 5,600,280 · App. 08/404,133
Differential amplifier and variable delay stage for use in a voltage controlled oscillator
Inventor:
Zhong Zhang
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Mar 13, 1995
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.