Granted Patent
Utility
US 5,358,452 · App. 08/114,159
Belt tensioning mechanism
Inventor:
Kai Zhao
Patented Case
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Granted: Oct 25, 1994
Filed: Sep 1, 1993
Inventor
Kai Zhao
Assignee (at issue)
Case 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.