Granted Patent
Utility
US 4,477,040 · App. 06/180,763
Aircraft wind energy device
Inventor:
James J. Karanik
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Aug 25, 1980
Inventor
James J. Karanik
Assignee (at issue)
Grumman Aerospace 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.