Granted Patent
Utility
US 6,455,850 · App. 09/373,123
On-site analyzer having spark emission spectrometer with even-wearing electrodes
Inventors:
John Coates, Neil Rosenbaum, Stephen Bridgman
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Aug 12, 1999
Inventors
John Coates
Neil Rosenbaum
Stephen Bridgman
Assignee (at issue)
Global Technovations, 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.