E21D15/58 - CPC Classification Index

ClassID:

136132 ⎘

E21D15/58 - CPC Classification

Classification description:

Props ; Chocks, e.g. made of flexible containers filled with backfilling material Devices for setting props or chocks

Sub-classes:

E21D15/581 » {in which the props are pre- loaded } 1
E21D15/584 » {in which a series of similarly shaped props obtain an almost equal load capacity by removable devices } 0
E21D15/585 » {by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important } 3