Granted Patent
Utility
US 6,557,348 · App. 10/067,090
On-line removal of copper deposits on steam turbine blades
Inventors:
Emery N. Lange, Jr., Thomas Pike
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Feb 4, 2002
Inventors
Emery N. Lange, Jr.
Thomas Pike
Assignee (at issue)
Ashland, Inc.
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.