Granted Patent
Utility
US 5,634,535 · App. 08/613,122
Composite brake disc
Inventors:
Thomas G. Fennell, Ronald Fisher, David Callum Johnson, Lynda M. Perks
Patented Case
View Patent ↗
Granted: Jun 3, 1997
Filed: Mar 8, 1996
Inventors
Thomas G. Fennell
Ronald Fisher
David Callum Johnson
Lynda M. Perks
Assignee (at issue)
Dunlop GmbH
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.