Granted Patent
Utility
US 4,642,058 · App. 06/731,159
Hydraulic system for marine propulsion devices
Inventor:
Donald K. Sullivan
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: May 6, 1985
Inventor
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.