Granted Patent
Utility
US 5,657,559 · App. 08/563,010
Rigging assembly for an excavating bucket
Inventor:
Darryl R. Immel
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Nov 24, 1995
Inventor
Darryl R. Immel
Assignee (at issue)
Harnischfeger Corporation
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.