Granted Patent
Utility
US 6,216,434 · App. 09/367,565
Chain joint
Inventors:
Hans Dalferth, Hans Bauer
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Aug 17, 1999
Inventors
Hans Dalferth
Hans Bauer
Assignee (at issue)
RUD-Kettenfabrik Rieger & Dietz GmbH u. 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.