Granted Patent
Utility
US 6,176,451 · App. 09/157,550
Utilizing high altitude long endurance unmanned airborne vehicle technology for airborne space lift range support
Inventor:
Thomas S. Drymon
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Sep 21, 1998
Inventor
Thomas S. Drymon
Assignee (at issue)
LOCKHEED MARTIN 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.