Granted Patent
Utility
US 6,704,416 · App. 09/535,558
Hook switch status glitch filter
Inventor:
Frank Sciabica
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Mar 27, 2000
Inventor
Frank Sciabica
Assignee (at issue)
Communications Systems, 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.