Granted Patent
Utility
US 5,017,780 · App. 07/409,671
Ion reflector
Inventors:
Roland Kutscher, Raimund Grix, Gangqiang Li, Hermann Wollnik
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Sep 20, 1989
Inventors
Roland Kutscher
Raimund Grix
Gangqiang Li
Hermann Wollnik
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.