Granted Patent
Utility
US 4,884,041 · App. 07/058,477
Fully integrated high-speed voltage controlled ring oscillator
Inventor:
Richard C. Walker
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Jun 5, 1987
Inventor
Richard C. Walker
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.