Granted Patent
Utility
US 6,746,227 · App. 09/884,668
Tire tread die
Inventors:
Donald Edward Helle, Ernest Wilford Looman, Jr.
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Jun 19, 2001
Inventors
Donald Edward Helle
Ernest Wilford Looman, Jr.
Assignee (at issue)
THE GOODYEAR TIRE & RUBBER COMPANY
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.