Granted Patent
Utility
US 6,726,857 · App. 10/303,671
Dielectric fluid having defined chemical composition for use in electrical apparatus
Inventors:
Gary L. Goedde, Gary A. Gauger, John Lapp, Alan P. Yerges
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Nov 25, 2002
Inventors
Gary L. Goedde
Gary A. Gauger
John Lapp
Alan P. Yerges
Assignee (at issue)
Cooper Industries Holdings
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.