Granted Patent
Utility
US 6,085,809 · App. 09/312,213
Valve assembly for use with containers in a closed application system
Inventor:
Keith F. Woodruff
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: May 14, 1999
Inventor
Keith F. Woodruff
Assignee (at issue)
American Cyanamid Company
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.