Granted Patent
Utility
US 6,402,893 · App. 09/791,302
Control equipment for the headbox tip lath in a paper machine or such and method of tip lath control
Inventors:
Juhana Lumiala, Jarmo Kirvesmäki, Kari Pitkajarvi, Tommi Korolainen, Ilkka Kemiläinen
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Feb 23, 2001
Inventors
Juhana Lumiala
Jarmo Kirvesmäki
Kari Pitkajarvi
Tommi Korolainen
Ilkka Kemiläinen
Assignee (at issue)
Metso Paper Inc.
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.