Granted Patent
Utility
US 4,906,333 · App. 07/249,864
Method and apparatus for extracting dust that is released when creping off a paper web
Inventor:
Harry Ingemar Myren
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Sep 27, 1988
Inventor
Harry Ingemar Myren
Assignee (at issue)
Valmet Paper Machinery 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.