Granted Patent
Utility
US 5,927,447 · App. 09/019,824
Composite brake drum
Inventor:
Weston E. Dickerson
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Feb 6, 1998
Inventor
Weston E. Dickerson
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.