Granted Patent
Utility
US 4,664,330 · App. 06/832,970
Drag washer
Inventor:
Dennis W. Darden
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Feb 25, 1986
Inventor
Dennis W. Darden
Assignee (at issue)
Brunswick 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.