E21C37/10 - CPC Classification Index

ClassID:

135895 ⎘

E21C37/10 - CPC Classification

Classification description:

Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole Devices with expanding elastic casings

Recent Application in this class:

20240328316

2024-10-03

HYBRID-TYPE ROCK SPLITTING PACKER USING WATER PRESSURE AND RUBBER INFLATION PRESSURE

20170342833

2017-11-30

Hydraulic rock fracturing device

20130199393

2013-08-08

Rock breaking product

20120091783

2012-04-19

EXPANSION DEVICE FOR BREAKING SOLID MATERIAL, USE OF THE DEVICE AND METHOD FOR PRODUCING IT

20090218877

2009-09-03

DEVICE FOR BREAKING SOLID MATERIAL AND METHOD OF MANUFACTURING A HOSE ELEMENT FOR SUCH A DEVICE

20050134103

2005-06-23

Method of and apparatus for breaking rock