Granted Patent
Utility
US 4,850,910 · App. 07/055,733
Counter-rotation transmission
Inventors:
Jeffery P. Higby, Kennedy K. McElroy, Jr., Arthur R. Ferguson, Gerald F. Bland, Michael Freitag, Donald K. Sullivan
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: May 29, 1987
Inventors
Jeffery P. Higby
Kennedy K. McElroy, Jr.
Arthur R. Ferguson
Gerald F. Bland
Michael Freitag
Donald K. Sullivan
Assignee (at issue)
Outboard Marine 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.