Granted Patent
Utility
US 4,425,552 · App. 06/291,204
Direct-type binary frequency synthesizer
Inventor:
Ronald C. Stirling
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Aug 17, 1981
Inventor
Ronald C. Stirling
Assignee (at issue)
Sperry Corp.
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.