Granted Patent
Utility
US 5,730,428 · App. 08/598,493
Leveling valve having a precision adjustment device
Inventor:
Georg Sulzyc
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Feb 8, 1996
Inventor
Georg 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.