Granted Patent
Utility
US 5,917,352 · App. 08/941,347
Three-state phase-detector/charge pump with no dead-band offering tunable phase in phase-locked loop circuits
Inventors:
Frank M. Dunlap, Vincent Tso
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Sep 30, 1997
Inventors
Frank M. Dunlap
Vincent Tso
Assignee (at issue)
Sierra Semiconductor
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.