Granted Patent
Utility
US 5,227,909 · App. 07/767,462
Single coil digitizer-coupled image scanner
Inventor:
James S. Watson
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Sep 30, 1991
Inventor
James S. Watson
Assignee (at issue)
CalComp Inc.
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.