Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Mast assembly with cylinder nested in substructure

Mast assembly with cylinder nested in substructure

US Patent 8720128 · Granted May 13, 2014

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cradle for retention, transportation and rotation of blowout preventer2019
Blowout preventer transport and handling system2017
Blowout preventer storage, transport and lift skid assembly2016
Rig movement and rotation assembly2016
Apparatus for and method of folding a mast or derrick2015
Dual offset derrick2013
Method and apparatus for erection and disassembly of a sectional mast assembly2013
Hingeable derrick2012
Articulating mast2012
Variable controlled guide device for wireline spooler2005
Method of folding an articulating mast2003
Method and apparatus for raising and lowering a telescoping mast1986