Granted Patent
Utility
US 6,184,864 · App. 09/074,505
Digitizer tablet apparatus with edge area as a macro cell
Inventor:
Ching-Chuan Chao
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: May 7, 1998
Inventor
Ching-Chuan Chao
Assignee (at issue)
Aiptek International GmbH
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.