Granted Patent
Utility
US 4,453,778 · App. 06/111,065
Proportioning hydraulic brake mechanism
Inventors:
Terrence Smith, Thomas S. Moore, Earl L. Helmers
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Jan 10, 1980
Inventors
Terrence Smith
Thomas S. Moore
Earl L. Helmers
Assignee (at issue)
Ford Motor 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.