Granted Patent
Utility
US 5,598,820 · App. 08/437,376
Cylinder head for four stroke internal combustion engine
Inventor:
Rodney Sokoloski
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: May 9, 1995
Inventor
Rodney Sokoloski
Assignee (at issue)
Edelbrock, LLC
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.