Granted Patent
Utility
US 4,587,436 · App. 06/173,111
Aircraft providing variable and constant electric power
Inventor:
Michael Cronin
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Jul 28, 1980
Inventor
Michael Cronin
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.