Granted Patent
Utility
US 6,305,404 · App. 09/423,008
Device for regulating the contents of a container
Inventor:
Peter Steiger
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Oct 29, 1999
Inventor
Peter Steiger
Assignee (at issue)
Lincoln GMBH
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.