Granted Patent
Utility
US 4,725,200 · App. 07/018,320
Apparatus and method for reducing relative motion between blade and rotor in steam turbine
Inventor:
Stephen A. Welhoelter
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Feb 24, 1987
Inventor
Stephen A. Welhoelter
Assignee (at issue)
Westinghouse Electric Company LLC
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.