Granted Patent
Utility
US 4,519,071 · App. 06/370,602
Phase-locked loop and clock circuit for a line switch
Inventor:
Robert L. Miller
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Apr 22, 1982
Inventor
Robert L. Miller
Assignee (at issue)
International Telephone and Telegraph 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.