Granted Patent
Utility
US 4,520,976 · App. 06/361,640
Cable bushing
Inventors:
Bernard T. Cournoyer, Norman A. Hedstrom
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Mar 25, 1982
Inventors
Bernard T. Cournoyer
Norman A. Hedstrom
Assignee (at issue)
WRIGHT LINE, LLC
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.