in which the props are pre- loaded

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Patents Grantslast 30 patents

Information Patent Grant
Device for roof support of underground mine/tunnel
- Patent number 9,267,375
- Issue date Feb 23, 2016
- Council of Scientific and Industrial Research
- Sudhir Kumar Kashyap
- E21 - EARTH DRILLING MINING
Information Patent Grant
2762605
- Patent number 2,762,605
- Issue date Sep 11, 1956
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
2640674
- Patent number 2,640,674
- Issue date Jun 2, 1953
- E21 - EARTH DRILLING MINING
Information Patent Grant
2450374
- Patent number 2,450,374
- Issue date Sep 28, 1948
- E21 - EARTH DRILLING MINING
Information Patent Grant
2444705
- Patent number 2,444,705
- Issue date Jul 6, 1948
- E04 - BUILDING
Information Patent Grant
1858021
- Patent number 1,858,021
- Issue date May 10, 1932
- E21 - EARTH DRILLING MINING