Granted Patent
Utility
US 5,592,908 · App. 08/313,868
Engine cylinder valve control system
Inventors:
Seinosuke Hara, Akira Hidaka
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Sep 28, 1994
Inventors
Seinosuke Hara
Akira Hidaka
Assignee (at issue)
Unisia Jecs 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.