Granted Patent
Utility
US 6,265,909 · App. 09/464,038
Three-valued switching circuit
Inventor:
Hiroshi Kudo
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: Dec 15, 1999
Inventor
Hiroshi Kudo
Assignee (at issue)
NEC 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.