Granted Patent
Utility
US 5,184,092 · App. 07/899,391
Phase-locked loop frequency tracking device including a direct digital synthesizer
Inventors:
Iradj Shahriary, Kevin M. McNab
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Jun 16, 1992
Inventors
Iradj Shahriary
Kevin M. McNab
Assignee (at issue)
Hughes Aircraft Company
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.