Granted Patent
Utility
US 5,449,129 · App. 08/198,722
Propulsion system for a lighter-than-air vehicle
Inventors:
David E. Carlile, Mark H. Wexler
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Feb 18, 1994
Inventors
David E. Carlile
Mark H. Wexler
Assignee (at issue)
Lockheed Corporation
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.