Granted Patent
Utility
US 4,132,415 · App. 05/795,533
Wiper apparatus for cable rods
Inventor:
William D. Langford
Patented Case
View Patent ↗
Granted: Jan 2, 1979
Filed: May 10, 1977
Inventor
William D. Langford
Assignee (at issue)
Incom International, Inc.
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.