Granted Patent
Utility
US 4,589,824 · App. 06/064,604
Rotor blade having a tip cap end closure
Inventor:
Joseph R. Kozlin
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Aug 7, 1979
Inventor
Joseph R. Kozlin
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.