Granted Patent
Utility
US 6,797,204 · App. 10/027,898
Method of determining wear
Inventors:
Robert Swain, Ralph Stanziola
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Oct 19, 2001
Inventors
Robert Swain
Ralph Stanziola
Assignee (at issue)
Chroma Group, 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.