Granted Patent
Utility
US 4,757,240 · App. 06/915,381
Apparatus for controlling electric vehicle using induction motor
Inventors:
Tetsuya Mizobuchi, Tsutomu Ozawa
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Oct 6, 1986
Inventors
Tetsuya Mizobuchi
Tsutomu Ozawa
Assignee (at issue)
HITACHI, 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.