Granted Patent
Utility
US 4,453,887 · App. 06/327,924
Vibration-dampened discharge ring for bulb hydraulic turbines
Inventor:
Thomas R. Schucker
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Dec 7, 1981
Inventor
Thomas R. Schucker
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.