Granted Patent
Utility
US 4,586,296 · App. 06/627,437
Method of finishing the surface of a disc
Inventor:
Jimmy Saunders
Patented Case
View Patent ↗
Granted: May 6, 1986
Filed: Jul 3, 1984
Inventor
Jimmy Saunders
Assignee (at issue)
Charlton Co., Ltd.
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.