Granted Patent
Utility
US 4,645,869 · App. 06/764,031
Digitizing tablet
Inventors:
Lynn H. Rockwell, Gary S. Dukarich
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Aug 9, 1985
Inventors
Lynn H. Rockwell
Gary S. Dukarich
Assignee (at issue)
Sanders 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.