E21D17/01 - CPC Classification Index

ClassID:

136148 ⎘

E21D17/01 - CPC Classification

Classification description:

Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section

Recent Application in this class:

20140133923

Mine Roof Support Member and Method for Constructing Improved Mine Roof Support Columns

20130236250

Fiberglass roof and rib plate

20110250023

ENGINEERED METAL CRIB FOR USE AS A SUPPORT STRUCTURE