Granted Patent
Utility
US 6,801,157 · App. 10/642,257
Guided wave radar level transmitter
Inventor:
Kevin M. Haynes
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Aug 15, 2003
Inventor
Kevin M. Haynes
Assignee (at issue)
Magnetrol International, Incorporated
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.