Granted Patent
Utility
US 4,388,787 · App. 06/274,299
Pole construction
Inventor:
Arnold M. Milbright
Patented Case
View Patent ↗
Granted: Jun 21, 1983
Filed: Jun 16, 1981
Inventor
Arnold M. Milbright
Assignee (at issue)
International Telephone and Telegraph 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.