Granted Patent
Utility
US 6,216,787 · App. 09/422,423
Apparatus for retrieving metal objects from a wellbore
Inventor:
David J. Ruttley
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Oct 21, 1999
Inventor
David J. Ruttley
Assignee (at issue)
Rattler Tools, 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.