Granted Patent
Utility
US 5,984,425 · App. 09/012,134
Spring applied/hydraulically released braking system employing self-resetting override valve
Inventor:
Gregory J. Orzal
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Jan 22, 1998
Inventor
Gregory J. Orzal
Assignee (at issue)
Wacker Corporation
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.