Granted Patent
Utility
US 4,734,817 · App. 06/901,266
Magnetic clutch
Inventors:
William A. Baker, Richard Shemanske
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Aug 28, 1986
Inventors
William A. Baker
Richard Shemanske
Assignee (at issue)
PT Components, 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.