CN103835733B - 用于煤矿井下液压支架的反冲洗过滤器 - Google Patents
用于煤矿井下液压支架的反冲洗过滤器 Download PDFInfo
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CN201410112728.3A CN103835733B (zh) | 2014-03-25 | 2014-03-25 | 用于煤矿井下液压支架的反冲洗过滤器 |
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CN103835733B true CN103835733B (zh) | 2015-12-02 |
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CN110513510B (zh) * | 2019-09-24 | 2024-04-30 | 郑州恒达智控科技股份有限公司 | 用于薄煤层液压支架的自动反冲洗式电液换向阀 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2362018C1 (ru) * | 2006-11-14 | 2009-07-20 | Марко Зюстеманалюзе Унд Энтвиклунг Гмбх | Блок клапанов |
CN201924943U (zh) * | 2011-03-03 | 2011-08-10 | 江南矿业集团有限公司 | 液控单向阀 |
CN202047835U (zh) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | 一种用于薄煤层液压支架的插装式液控单向阀 |
CN202176347U (zh) * | 2011-06-29 | 2012-03-28 | 中国航天科技集团公司烽火机械厂 | 一种矿用电液控全自动反冲洗过滤器 |
CN202560256U (zh) * | 2012-04-10 | 2012-11-28 | 巨隆集团芜湖兴隆液压有限公司 | 一种插装式立柱液控单向阀 |
CN203769810U (zh) * | 2014-03-25 | 2014-08-13 | 郑州煤机液压电控有限公司 | 用于煤矿井下液压支架的反冲洗过滤器 |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2362018C1 (ru) * | 2006-11-14 | 2009-07-20 | Марко Зюстеманалюзе Унд Энтвиклунг Гмбх | Блок клапанов |
CN201924943U (zh) * | 2011-03-03 | 2011-08-10 | 江南矿业集团有限公司 | 液控单向阀 |
CN202047835U (zh) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | 一种用于薄煤层液压支架的插装式液控单向阀 |
CN202176347U (zh) * | 2011-06-29 | 2012-03-28 | 中国航天科技集团公司烽火机械厂 | 一种矿用电液控全自动反冲洗过滤器 |
CN202560256U (zh) * | 2012-04-10 | 2012-11-28 | 巨隆集团芜湖兴隆液压有限公司 | 一种插装式立柱液控单向阀 |
CN203769810U (zh) * | 2014-03-25 | 2014-08-13 | 郑州煤机液压电控有限公司 | 用于煤矿井下液压支架的反冲洗过滤器 |
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Effective date of registration: 20201125 Address after: 450016 No. ninth, 167 Avenue, Zhengzhou Economic Development Zone, Henan, China Patentee after: HYDRAULIC & ELECTRIC CONTROL EQUIPMENT CO LTD ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. Patentee after: ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. Address before: 450016 No. ninth, 167 Avenue, Zhengzhou Economic Development Zone, Henan, China Patentee before: HYDRAULIC & ELECTRIC CONTROL EQUIPMENT CO LTD ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. |
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Effective date of registration: 20220727 Address after: 450016 No. 167, 9th Street, Zhengzhou area (Economic Development Zone), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province Patentee after: HYDRAULIC & ELECTRIC CONTROL EQUIPMENT CO LTD ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. Address before: No.167, 9th Street, Zhengzhou Economic Development Zone, Henan Province, 450016 Patentee before: HYDRAULIC & ELECTRIC CONTROL EQUIPMENT CO LTD ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. Patentee before: ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. |
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Address after: No.167, 9th Street, Zhengzhou Economic and Technological Development Zone, Henan Province, 450016 Patentee after: Zhengzhou Hengda Intelligent Control Technology Co.,Ltd. Address before: 450016 No. 167, 9th Street, Zhengzhou area (Economic Development Zone), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province Patentee before: HYDRAULIC & ELECTRIC CONTROL EQUIPMENT CO LTD ZHENGZHOU COAL MINING MACHINERY GROUP Co.,Ltd. |
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