Granted Patent
Utility
US 4,718,529 · App. 06/891,156
Friction face for a magnetic coupling
Inventors:
Edward R. Kroeger, Richard C. Dvorak
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Jul 31, 1986
Inventors
Edward R. Kroeger
Richard C. Dvorak
Assignee (at issue)
DANA LIMITED
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.