Granted Patent
Utility
US 5,111,845 · App. 07/633,717
Partition valve for fluid delivery system
Inventor:
Brevard S. Garrison
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Dec 21, 1990
Inventor
Brevard S. Garrison
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.