Granted Patent
Utility
US 6,368,098 · App. 09/244,987
Apparatus for the calibration of hollow chamber sheet extruded lines
Inventor:
Michael Meier-Kaiser
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Feb 4, 1999
Inventor
Michael Meier-Kaiser
Assignee (at issue)
Roehm GmbH Chemische Fabrik
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.