Granted Patent
Utility
US 6,675,935 · App. 10/414,307
Helicopter lineman's ladder and method for energized powerline repair
Inventor:
Darryl K. Ed
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Apr 16, 2003
Inventor
Darryl K. Ed
Assignee (at issue)
Haverfield 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.