Granted Patent
Utility
US 6,646,496 · App. 10/166,819
Current control circuit
Inventor:
Shinichi Watanabe
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Jun 11, 2002
Inventor
Shinichi Watanabe
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.