Granted Patent
Utility
US 5,620,116 · App. 08/372,391
Rotary vane gate
Inventors:
Wolfgang Kluger, Klaus Schwab, Andreas Franz, Dieter Quittek, Bernd Kollner
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Jan 13, 1995
Inventors
Wolfgang Kluger
Klaus Schwab
Andreas Franz
Dieter Quittek
Bernd Kollner
Assignee (at issue)
Krupp Polysius AG
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.