Granted Patent
Utility
US 4,977,985 · App. 07/360,159
Method of carrying out maintenace of multi-disc brake arrangement
Inventors:
Trevor C. Wells, Anthony J. Waring
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Jun 1, 1989
Inventors
Trevor C. Wells
Anthony J. Waring
Assignee (at issue)
Dunlop Limited, A British 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.