Granted Patent
Utility
US 5,176,404 · App. 07/684,026
Level control valve for automatically keeping constant the vehicle height of a commercial vehicle
Inventor:
Jercy Sulzyc
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Apr 11, 1991
Inventor
Jercy Sulzyc
Assignee (at issue)
G. Rau GmbH & Co.
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.