Granted Patent
Utility
US 4,970,472 · App. 07/402,042
Compensated phase locked loop circuit
Inventors:
Richard A. Kennedy, Seyed R. Zarabadi
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Sep 1, 1989
Inventors
Richard A. Kennedy
Seyed R. Zarabadi
Assignee (at issue)
DELCO ELECTRONICS CORPORATION
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.