E21D17/02 - CPC Classification Index

ClassID:

136149 ⎘

E21D17/02 - CPC Classification

Classification description:

Caps for supporting mine roofs Cantilever extension or similar protecting devices

Sub-classes:

E21D17/0206 » {Hydraulically operated extension devices} 0
E21D17/0213 » {Assembling devices for pivoting caps upwardly} 0
E21D17/03 » Brackets for roof-supporting bars 0
E21D17/04 » for use in longwall working 0
E21D17/06 » for use in drifting galleries 0
E21D17/08 » Cap joints for obtaining a coal-face free of pit-props 0

Recent Application in this class:

20160146007

SYSTEM FOR MOUNTING CROSSBAR OF TEMPORARY ROOF SUPPORT SYSTEM