Granted Patent
Utility
US 6,660,355 · App. 09/745,775
Wear resistant articles
Inventor:
David Callum Johnson
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Dec 22, 2000
Inventor
David Callum Johnson
Assignee (at issue)
Dunlop Aerospace Limited
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.