Granted Patent
Utility
US 4,872,811 · App. 07/080,785
Inboard servo for marine controllable pitch propellers
Inventors:
Joseph L. Cavallaro, Jr., Patrick J. Kelly
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Aug 3, 1987
Inventors
Joseph L. Cavallaro, Jr.
Patrick J. Kelly
Assignee (at issue)
Bird-Johnson Company
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.