Granted Patent
Utility
US 5,895,345 · App. 08/925,661
Centrifugal separator with a reduced number of fluidized recesses
Inventor:
Benjamin V. Knelson
Patented Case
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Granted: Apr 20, 1999
Filed: Sep 9, 1997
Inventor
Benjamin V. Knelson
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.