Granted Patent
Utility
US 4,517,533 · App. 06/545,803
Integrated crystal VCO
Inventor:
Wayne E. Bretl
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Oct 26, 1983
Inventor
Wayne E. Bretl
Assignee (at issue)
Zenith Electronics LLC
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.