Granted Patent
Utility
US 5,992,061 · App. 08/900,351
Dragline bucket dump compensator
Inventors:
Robert S. Fleck, Charles G. Ollinger, IV
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Jul 25, 1997
Inventors
Robert S. Fleck
Charles G. Ollinger, IV
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.