Granted Patent
Utility
US 6,233,335 · App. 09/079,304
Battery switching subscriber loop interface circuit
Inventor:
Christopher Ludeman
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: May 15, 1998
Inventor
Christopher Ludeman
Assignee (at issue)
Intersil 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.