Granted Patent
Utility
US 4,631,431 · App. 06/635,618
Linear motor having improved magnetic characteristics
Inventor:
Stephen Ralph Viskochil
Patented Case
View Patent ↗
Granted: Dec 23, 1986
Filed: Jul 30, 1984
Inventor
Stephen Ralph Viskochil
Assignee (at issue)
Priam 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.