Granted Patent
Utility
US 4,917,533 · App. 07/230,029
Resurfacing apparatus and process
Inventor:
Jack H. Wilson, Sr.
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Aug 9, 1988
Inventor
Jack H. Wilson, Sr.
Assignee (at issue)
Sport Koter U.S.A., Inc.
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.