Granted Patent
Utility
US 5,213,377 · App. 07/749,164
Coupling for seating a tube end in a fitting
Inventors:
Jurgen Humpert, Max Derr
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Aug 23, 1991
Inventors
Jurgen Humpert
Max Derr
Assignee (at issue)
Friedrich Grohe Armaturenfabrik GmbH & Co.
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.