Granted Patent
Utility
US 5,903,197 · App. 09/041,466
Phase-locked loop circuit
Inventor:
Hirohisa Kikugawa
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Mar 12, 1998
Inventor
Hirohisa Kikugawa
Assignee (at issue)
Nippon Precision Circuits Inc.
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.