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beijing tiandi-marco electro-hydra… 🛈 | 209 |
huangling mining (group) company | 2 |
Title of patent family (most common patent title) |
Family members |
Filing year |
---|---|---|
damping pressure reducing valve | 2 | 2011 |
working face equipment positioning system based on image measurement | 2 | 2014 |
coal port illuminating device of top coal caving bracket | 2 | 2011 |
integrated chain tightener for scraper conveyers | 2 | 2013 |
coal mining face hydraulic support straightening system and straightening method | 2 | 2013 |
working face hydraulic support control device with wireless communication function | 2 | 2011 |
method of preventing fully-mechanized coal mining face cable from jumping from slot | 2 | 2013 |
network camera with self-dedusting device | 2 | 2010 |
industrial ethernet system of fully-mechanized mining face | 2 | 2011 |
sealed unloading groove between valve body and valve joint plate | 2 | 2012 |