Granted Patent
Utility
US 6,170,780 · App. 09/143,047
Twin engine aircraft
Inventor:
Sam Williams
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Aug 28, 1998
Inventor
Sam Williams
Assignee (at issue)
Sam Barlow Williams
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.