Granted Patent
Utility
US 4,895,281 · App. 07/234,963
Rotary closure for a vessel
Inventor:
Horst Lorenz
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Aug 22, 1988
Inventor
Horst Lorenz
Assignee (at issue)
Robert Krups Stiftung & Co. KG
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.