Granted Patent
Utility
US 6,433,635 · App. 09/837,067
Amplifier
Inventor:
Shinichi Watanabe
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Apr 18, 2001
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.