Granted Patent
Utility
US 6,007,717 · App. 08/605,175
Filter cloths incorporating a feed passage connector for use with plate-type filter presses
Inventors:
Peter Hayhurst, Peter Anthony Lofts
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Aug 25, 1997
Inventors
Peter Hayhurst
Peter Anthony Lofts
Assignee (at issue)
SCAPA Group PLC
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.