Granted Patent
Utility
US 6,180,002 · App. 09/128,190
Filter press with alternating diaphragm squeeze chamber plates and filtration chamber plates
Inventor:
David M. Higgins
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Aug 3, 1998
Inventor
David M. Higgins
Assignee (at issue)
United States Filter Corporation
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.