Granted Patent
Utility
US 5,423,895 · App. 08/110,426
Sludge digesters with separate liquid chambers to buoy ballast members
Inventors:
Jeffrey L. Wight, Lynn W. Cook, David P. Brown
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Aug 23, 1993
Inventors
Jeffrey L. Wight
Lynn W. Cook
David P. Brown
Assignee (at issue)
Baker Hughes Holdings LLC
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.