Granted Patent
Utility
US 4,955,562 · App. 07/272,015
Microwave powered aircraft
Inventors:
John Everett Martin, James D. DeLaurier, George W. Jull, Arne Lillemark
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Nov 16, 1988
Inventors
John Everett Martin
James D. DeLaurier
George W. Jull
Arne Lillemark
Assignee (at issue)
Her Majesty the Queen in right of Canada, as represented by the Minister of Communications
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.