Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Heavy wall drill pipe and method of manufacture of heavy wall drill pipe

Heavy wall drill pipe and method of manufacture of heavy wall drill pipe

US Patent 4674171 · Granted Jun 23, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Flowmeter having an interchangeable elongate member attached to the inner surfac2016
Apparatus for cutting an internal bore2011
Apparatus for reducing and separating emulsions and homgeneous components from c1996
Methods for reducing and separating emulsions and homogeneous components from co1995
Oilfield equipment identification apparatus1994
Oilfield equipment identification apparatus1992
Method and apparatus for well drilling1988
Stabilizing tool for well drilling1988
Heavy wall drill pipe1988
Heavy wall drill pipe1988
Heavy wall drill pipe1988
Heavy wall drill pipe and method of manufacture of heavy wall drill pipe1988