Bharat B. Dhar

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Dhanbad Bihar, IN

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Patents Grantslast 30 patents

Information Patent Grant
Arch useful for withstanding effect of rockburst occurring in under...
- Patent number 6,102,628
- Issue date Aug 15, 2000
- Council of Scientific & Industrial Research
- Sibnath Maity
- E21 - EARTH DRILLING MINING
Information Patent Grant
Equipment for shortwall mining useful for extraction of pillars in...
- Patent number 5,769,504
- Issue date Jun 23, 1998
- Council of Scientific & Industrial Research
- Sibnath Maity
- E21 - EARTH DRILLING MINING
Information Patent Grant
Equipment useful for winning ores particularly coal in longwall mining
- Patent number 5,368,369
- Issue date Nov 29, 1994
- Council of Scientific & Industrial Research
- Sibnath Maity
- E21 - EARTH DRILLING MINING