Granted Patent
Utility
US 4,727,791 · App. 06/882,531
Apparatus for controlling a hydraulic single acting cylinder
Inventor:
Yuji Satoh
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Jul 7, 1986
Inventor
Yuji Satoh
Assignee (at issue)
Diesel Kiki Co., 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.