Granted Patent
Utility
US 6,806,475 · App. 10/089,594
Methods and apparatus for investigating emissions
Inventors:
John Lightfoot, Karl Anthony Hughes
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Mar 27, 2002
Inventors
John Lightfoot
Karl Anthony Hughes
Assignee (at issue)
British Nuclear Fuels PLC
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.