Granted Patent
Utility
US 5,031,685 · App. 07/315,900
Internal combustion engine and method for making the same
Inventor:
Russell J. Van Rens
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Feb 27, 1989
Inventor
Russell J. Van Rens
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.