Granted Patent
Utility
US 6,212,763 · App. 09/342,564
Torque-turn system for a three-element sucker rod joint
Inventor:
Frederic M. Newman
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Jun 29, 1999
Inventor
Frederic M. Newman
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.