Granted Patent
Utility
US 6,597,453 · App. 09/143,451
Computer joystick
Inventor:
Liu Shu-Ming
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Aug 28, 1998
Inventor
Liu Shu-Ming
Assignee (at issue)
Primax Electronics 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.