Granted Patent
Utility
US 4,613,436 · App. 06/666,830
Membrane assembly for fluid separations-disk
Inventors:
William W. Wight, Richard A. Becker
Patented Case
View Patent ↗
Granted: Sep 23, 1986
Filed: Oct 31, 1984
Inventors
William W. Wight
Richard A. Becker
Assignee (at issue)
Separex (Societe Anonyme)
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.