Granted Patent
Utility
US 4,610,599 · App. 06/528,871
Apparatus for controlling a hydraulic turbine
Inventor:
Ray Long
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Sep 1, 1983
Inventor
Ray Long
Assignee (at issue)
Allis-Chalmers 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.