Granted Patent
Utility
US 6,055,931 · App. 09/170,772
Clog resistant air vent plug for teatcup liner
Inventor:
Scott Sanford
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Oct 13, 1998
Inventor
Scott Sanford
Assignee (at issue)
DEC International, Inc.
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.