Granted Patent
Utility
US 6,614,889 · App. 09/837,965
Software controlled switch device
Inventor:
John L. Perkins
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Apr 19, 2001
Inventor
John L. Perkins
Assignee (at issue)
Exfax Technologies Pty. Ltd.
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.