Granted Patent
Utility
US 4,922,141 · App. 07/205,517
Phase-locked loop delay line
Inventors:
Karl M. J. Lofgren, Gerald W. Shearer, Kenneth W. Ouyang
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Jun 3, 1988
Inventors
Karl M. J. Lofgren
Gerald W. Shearer
Kenneth W. Ouyang
Assignee (at issue)
Western Digital
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.