Granted Patent
Utility
US 6,267,449 · App. 09/398,495
Guide arrangement for a drum-type mineral cutting machine
Inventors:
Hans Meya, Gerhard Merten
Patented Case
View Patent ↗
Granted: Jul 31, 2001
Filed: Sep 17, 1999
Inventors
Hans Meya
Gerhard Merten
Assignee (at issue)
DBT Deutsche Bergbau-Technik 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.