Granted Patent
Utility
US 5,161,489 · App. 07/465,268
Reversible engine
Inventor:
Isao Morooka
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Jun 11, 1990
Inventor
Isao Morooka
Assignee (at issue)
Komatsu Zenoah Co.
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.