Granted Patent
Utility
US 4,579,611 · App. 06/562,563
Graphite tamped brush connection and method of making same
Inventor:
Floyd J. Broady
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Dec 19, 1983
Inventor
Floyd J. Broady
Assignee (at issue)
Union Carbide 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.