Granted Patent
Utility
US 5,598,487 · App. 08/306,073
Hand-held data entry system removable signature pad
Inventors:
David C. Hacker, Jerry L. Walter, Arvin D. Danielson, Dennis A. Durbin
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Sep 14, 1994
Inventors
David C. Hacker
Jerry L. Walter
Arvin D. Danielson
Dennis A. Durbin
Assignee (at issue)
Norand Corporation
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.