Granted Patent
Utility
US 6,604,743 · App. 10/049,799
Replaceable wearing surface for a sealing arrangement
Inventors:
Stefan Hansson, Bo Clarstrom, Johan Eriksson
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: May 31, 2002
Inventors
Stefan Hansson
Bo Clarstrom
Johan Eriksson
Assignee (at issue)
Kvaerner Pulping AB
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.