Granted Patent
Utility
US 6,201,447 · App. 09/220,754
Phase synchronization circuit with units for setting sweep frequency and control voltage
Inventor:
Hideo Tsutsui
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Dec 28, 1998
Inventor
Hideo Tsutsui
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.