Granted Patent
Utility
US 5,771,020 · App. 08/687,751
Lightning locating system
Inventors:
Ralph J. Markson, Lothar H. Ruhnke
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Jul 25, 1996
Inventors
Ralph J. Markson
Lothar H. Ruhnke
Assignee (at issue)
Airborne Research Associates, 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.