Granted Patent
Utility
US 6,563,491 · App. 09/659,822
Coordinate input apparatus and the recording medium thereof
Inventor:
Katsuyuki Omura
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Sep 11, 2000
Inventor
Katsuyuki Omura
Assignee (at issue)
RICOH COMPANY, 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.