Granted Patent
Utility
US 5,957,067 · App. 09/119,585
Ceramic liner
Inventors:
Klaus Dobbeling, Armin Heger, Andreas Pfeiffer
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Jul 21, 1998
Inventors
Klaus Dobbeling
Armin Heger
Andreas Pfeiffer
Assignee (at issue)
ABB RESEARCH LTD.
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.