Granted Patent
Utility
US 6,429,426 · App. 09/617,716
Ionization chamber with electron source
Inventor:
Hans-Rudiger Doring
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jul 17, 2000
Inventor
Hans-Rudiger Doring
Assignee (at issue)
Bruker Saxonia Analytik 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.