Granted Patent
Utility
US 5,744,757 · App. 08/642,489
Plenum cable
Inventors:
Robert Kenny, Douglas O'Brien
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: May 3, 1996
Inventors
Robert Kenny
Douglas O'Brien
Assignee (at issue)
Belden Wire & Cable Company
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.