Granted Patent
Utility
US 6,446,770 · App. 09/820,818
Brake rotor having an array of grooves formed thereon
Inventors:
Wenqi Qian, Donald L. Burgoon, Seen E. Killeen
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Mar 30, 2001
Inventors
Wenqi Qian
Donald L. Burgoon
Seen E. Killeen
Assignee (at issue)
Performance Friction Corporation
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.