Granted Patent
Utility
US 4,697,156 · App. 06/941,184
Digitally controlled variable frequency synthesizer
Inventor:
Georg Rudolph
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Dec 12, 1986
Inventor
Georg Rudolph
Assignee (at issue)
Wandel & Goltermann GmbH & Co.
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.