Granted Patent
Utility
US 4,656,313 · App. 06/824,293
EMI/EMP electrical cable penetration seal
Inventors:
Rogers A. Moore, Joseph R. O'Brien, David O. Brown
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Jan 23, 1986
Inventors
Rogers A. Moore
Joseph R. O'Brien
David O. Brown
Assignee (at issue)
Federal Signal 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.