Granted Patent
Utility
US 6,661,222 · App. 10/158,954
Turbine blade clearance on-line measurement system
Inventor:
Michael Twerdochlib
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: May 31, 2002
Inventor
Michael Twerdochlib
Assignee (at issue)
Siemens Westinghouse Power 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.