Granted Patent
Utility
US 6,123,849 · App. 09/284,717
Chromatographic column and valve
Inventor:
Geoffrey Purdom
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: May 21, 1999
Inventor
Geoffrey Purdom
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.