Granted Patent
Utility
US 6,224,763 · App. 09/305,655
Hollow-fiber membrane device including a split disk tube sheet support
Inventors:
Xianshe Feng, John Ivory
Patented Case
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Granted: May 1, 2001
Filed: May 5, 1999
Inventors
Xianshe Feng
John Ivory
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.