Granted Patent
Utility
US 4,736,331 · App. 06/827,221
Helicopter power available to hover indicator
Inventors:
Nicholas D. Lappos, Raymond D. Zagranski, James J. Howlett
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Feb 5, 1986
Inventors
Nicholas D. Lappos
Raymond D. Zagranski
James J. Howlett
Assignee (at issue)
UNITED TECHNOLOGIES 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.