Granted Patent
Utility
US 6,651,955 · App. 09/919,169
Elastomeric valve, and methods
Inventor:
Ronald R. Anderson
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jul 30, 2001
Inventor
Ronald R. Anderson
Assignee (at issue)
Hewlett-Packard Development Company, L.P.
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.