Granted Patent
Utility
US 6,073,752 · App. 08/990,904
Scraper chain belt for scraper chain conveyors
Inventor:
Hans Meya
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Dec 15, 1997
Inventor
Hans Meya
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.