Granted Patent
Utility
US 4,544,449 · App. 06/540,314
Apparatus for de-watering fibrous suspensions
Inventor:
Ronnie A. Arav
Patented Case
View Patent ↗
Granted: Oct 1, 1985
Filed: Oct 11, 1983
Inventor
Ronnie A. Arav
Assignee (at issue)
Beloit Walmsley Limited
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.