Granted Patent
Utility
US 4,501,663 · App. 06/286,420
Filter cartridges and methods and components for making them
Inventor:
Wayne S. Merrill
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Jul 24, 1981
Inventor
Wayne S. Merrill
Assignee (at issue)
Millipore 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.