Granted Patent
Utility
US 4,339,206 · App. 06/207,290
Mixing apparatus for mixing a fluid fiber suspension with a treatment fluid suspension
Inventor:
Bjorn Ahs
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Nov 17, 1980
Inventor
Bjorn Ahs
Assignee (at issue)
Kamyr 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.