Granted Patent
Utility
US 6,715,601 · App. 10/152,604
Method for control of the chain drive mechanisms of underground working machines, especially chain scraper conveyors, and a chain scraper conveyor
Inventors:
Dirk Abel, Arno Breimhorst, Erwin Haese, Gerhard Merten, Peter Herkenrath, Nicole Kostiza, Manfred Ziegler, Ulrich Paschedag
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: May 21, 2002
Inventors
Dirk Abel
Arno Breimhorst
Erwin Haese
Gerhard Merten
Peter Herkenrath
Nicole Kostiza
Manfred Ziegler
Ulrich Paschedag
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.