Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Tool joint stress relief groove

Tool joint stress relief groove

US Patent 5355968 · Granted Oct 18, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

High efficiency drill pipe2007
Oilfield tubular connection2002
Tool joint and drill pipe made therefrom2001
High efficiency drill pipe2001
Ultra high torque double shoulder tool joint1999
Drill pipe with improved connectors1996
Shoulder dressing apparatus1995
Method of connecting joints of drill pipe1985