Granted Patent
Utility
US 6,067,734 · App. 09/064,537
Dragline walking mechanism with improved planetary transmission
Inventor:
Harvey J. Kallenberger
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Apr 22, 1998
Inventor
Harvey J. Kallenberger
Assignee (at issue)
Harnischfeger Technologies, Inc.
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.