Granted Patent
Utility
US 6,216,435 · App. 09/525,495
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Inventors:
Zvonimir Bogdan, Hans-Jurgen Scherle
Patented Case
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Granted: Apr 17, 2001
Filed: Mar 15, 2000
Inventors
Zvonimir Bogdan
Hans-Jurgen Scherle
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.