Granted Patent
Utility
US 6,779,598 · App. 10/148,346
Swivel and eccentric weight to orient a roller sub
Inventor:
Robert N. Hall
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Jul 22, 2002
Inventor
Robert N. Hall
Assignee (at issue)
WIRELINE ENGINEERING LIMITED
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.