Granted Patent
Utility
US 6,719,896 · App. 10/056,301
Fluid-filtration receptacle with user-variable semi-permeable drain assembly
Inventor:
Phillip Clark
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 23, 2002
Inventor
Phillip Clark
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.