Granted Patent
Utility
US 6,597,579 · App. 09/589,025
Control device for electrohydraulic mining controllers
Inventors:
Martin Reszat, Johannes Wesselmann, Jurgen Tschope
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Jun 7, 2000
Inventors
Martin Reszat
Johannes Wesselmann
Jurgen Tschope
Assignee (at issue)
DBT Automation 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.