Granted Patent
Utility
US 4,864,678 · App. 07/218,133
Relating to windscreen wiper arms
Inventor:
Anthony Stevens
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Jul 13, 1988
Inventor
Anthony Stevens
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.