Granted Patent
Utility
US 6,206,150 · App. 09/222,511
Composite brake drum having a balancing skirt
Inventor:
Ross S. Hill
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Dec 29, 1998
Inventor
Ross S. Hill
Assignee (at issue)
Hayes Lemmerz International, Inc.
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.