Granted Patent
Utility
US 6,769,742 · App. 10/086,323
Clamped chain cover for longwall plough guide
Inventor:
Gerhard Siepenkort
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Mar 1, 2002
Inventor
Gerhard Siepenkort
Assignee (at issue)
DBT 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.