Granted Patent
Utility
US 6,827,090 · App. 09/923,051
Process for removing deposits from water-carrying systems and devices for water supply
Inventors:
Michael W. Nurnberger, Robert Nusko, Georg Maier
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Aug 6, 2001
Inventors
Michael W. Nurnberger
Robert Nusko
Georg Maier
Assignee (at issue)
R. Späne KG
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.