Granted Patent
Utility
US 6,469,635 · App. 09/600,281
Bore hole transmission system using impedance modulation
Inventor:
Steven Martin Hudson
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Jul 14, 2000
Inventor
Steven Martin Hudson
Assignee (at issue)
FLIGHT REFUELING LIMITED
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.