Granted Patent
Utility
US 4,498,712 · App. 06/505,138
Empty/load brake control arrangement
Inventor:
James E. Hart
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Jun 16, 1983
Inventor
James E. Hart
Assignee (at issue)
American Standard 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.