Granted Patent
Utility
US 4,609,881 · App. 06/607,398
Frequency synthesizers
Inventor:
John N. Wells
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: May 3, 1984
Inventor
John N. Wells
Assignee (at issue)
Marconi Instruments Limited
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.