Granted Patent
Utility
US 6,712,134 · App. 10/074,523
Modular bi-directional hydraulic jar with rotating capability
Inventor:
Carl W. Stoesz
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Feb 12, 2002
Inventor
Carl W. Stoesz
Assignee (at issue)
Baker Hughes Holdings 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.