Granted Patent
Utility
US 6,424,274 · App. 09/290,139
Keypad scanning with few pins
Inventors:
Paul G. Schnizlein, Kenneth Tallo
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Apr 13, 1999
Inventors
Paul G. Schnizlein
Kenneth Tallo
Assignee (at issue)
Legerity, 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.