Granted Patent
Utility
US 5,247,270 · App. 07/633,772
Dual leaky cables
Inventors:
R. Keith Harman, Charles R. Hill, Brian Rich
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Dec 26, 1990
Inventors
R. Keith Harman
Charles R. Hill
Brian Rich
Assignee (at issue)
Senstar 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.