Granted Patent
Utility
US 5,237,252 · App. 07/815,197
Method of driving plural linear induction motors in a transporting system
Inventors:
Michihiro Tanaka, Junichi Teruta
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Dec 31, 1991
Inventors
Michihiro Tanaka
Junichi Teruta
Assignee (at issue)
Hitachi Kiden Kogyo, Ltd.
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.