Granted Patent
Utility
US 6,247,494 · App. 09/517,822
Control valve device for a hydraulic user
Inventor:
Horst Deininger
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Mar 2, 2000
Inventor
Horst Deininger
Assignee (at issue)
Linde GmbH
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.