Granted Patent
Utility
US 6,249,169 · App. 09/221,989
Transistor output circuit
Inventor:
Koji Okada
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Dec 29, 1998
Inventor
Koji Okada
Assignee (at issue)
Fujitsu Limited
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.