Granted Patent
Utility
US 5,287,955 · App. 07/929,277
Connections for inter-connecting the pans of scraper-chain conveyors
Inventors:
Bernd Steinkuhl, Detlef Hahn
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Aug 13, 1992
Inventors
Bernd Steinkuhl
Detlef Hahn
Assignee (at issue)
Westfalia Becorit Industrietechnik 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.