Granted Patent
Utility
US 4,997,586 · App. 07/214,052
Medium for transmitting motive power
Inventors:
Kinya Mizui, Harumi Furuta
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Jun 30, 1988
Inventors
Kinya Mizui
Harumi Furuta
Assignee (at issue)
Mitsui Petrochemical Industries, 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.