Granted Patent
Utility
US 5,228,545 · App. 07/788,368
Internal shoe drum brake
Inventor:
Andrew Blewitt
Patented Case
View Patent ↗
Granted: Jul 20, 1993
Filed: Nov 6, 1991
Inventor
Andrew Blewitt
Assignee (at issue)
Lucas Industries public limited 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.