Granted Patent
Utility
US 6,550,163 · App. 10/236,358
Dragline apparatus and bucket
Inventors:
Terry L. Briscoe, Charles G. Ollinger, IV, Ermanno Simonutti
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Sep 5, 2002
Inventors
Terry L. Briscoe
Charles G. Ollinger, IV
Ermanno Simonutti
Assignee (at issue)
ESCO GROUP LLC
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.