Granted Patent
Utility
US 4,645,086 · App. 06/781,253
Closure device for a container
Inventor:
Karl-Heinz Rosenthal
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Sep 27, 1985
Inventor
Karl-Heinz Rosenthal
Assignee (at issue)
Bielsteiner Verschlusstechnik 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.