Granted Patent
Utility
US 5,797,169 · App. 08/776,532
Coupling piece for the detachable connection of containers
Inventors:
Julius Donner, Thomas Niemann, Wilhelm Wilk
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Apr 9, 1997
Inventors
Julius Donner
Thomas Niemann
Wilhelm Wilk
Assignee (at issue)
Mac-Gregor Conver 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.