E21B19/04 - CPC Classification Index

ClassID:

135341 ⎘

E21B19/04 - CPC Classification

Classification description:

Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables; Rod or cable suspensions Hooks

Recent Application in this class:

20250020030

2025-01-16

QUICK BAIL SYSTEM

20210293098

2021-09-23

Installing pipeline segments within a conduit

20190353022

2019-11-21

Method, system, and medium for controlling rate of a penetration of a drill bit

20180340379

2018-11-29

Elevator system for supporting a tubular member

20170089696

2017-03-30

Measuring hookload

20170044875

2017-02-16

Tool identification

20150197997

2015-07-16

Apparatus for tripping oil pipe and system for automatic well workover

20150090464

2015-04-02

Lift frame system and method of use

20110285156

2011-11-24

Support becket for rig operations

#10

20100127149

2010-05-27

Support becket for rig operations

#11

20100038095

2010-02-18

Dual-saddle ear support apparatus

#12

20080135230

2008-06-12

Dual-saddle ear support apparatus

#13

17185356

2025-05-06

Dual-packer injection leaching system and method