CN101403310B - 耐腐蚀单体液压支柱及其加工方法 - Google Patents
耐腐蚀单体液压支柱及其加工方法 Download PDFInfo
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CN2008101591817A CN101403310B (zh) | 2008-11-24 | 2008-11-24 | 耐腐蚀单体液压支柱及其加工方法 |
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CN2008101591817A CN101403310B (zh) | 2008-11-24 | 2008-11-24 | 耐腐蚀单体液压支柱及其加工方法 |
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CN101403310A CN101403310A (zh) | 2009-04-08 |
CN101403310B true CN101403310B (zh) | 2010-08-25 |
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CN102979538B (zh) * | 2012-12-07 | 2015-05-06 | 北川万德福机电产品研发实验室 | 单体液压支柱中活柱或综采支架立柱活塞杆的生产方法 |
CN103758544A (zh) * | 2014-01-22 | 2014-04-30 | 淮南巨万实业有限责任公司 | 一种热装缩径焊接加装防腐层液压支架立柱方法 |
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Owner name: TONGLI EQUIPMENT MANUFACTURING CO., LTD., SHANDONG Free format text: FORMER NAME: SHANDONG TAISHAN JIANNENG GROUP LAIWU TONGLI MACHINERY CO., LTD. |
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CP01 | Change in the name or title of a patent holder |
Address after: 271100 Laiwu Tongli Machinery Co., Ltd., 23, fairy Road, Shandong, Laiwu Patentee after: SHANDONG ENERGY MACHINERY GROUP TONGLI EQUIPMENT MANUFACTURING CO., LTD. Address before: 271100 Laiwu Tongli Machinery Co., Ltd., 23, fairy Road, Shandong, Laiwu Patentee before: Shandong Taishan Jianneng Group Laiwu Tongli Machinery Co., Ltd. |
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Granted publication date: 20100825 Termination date: 20131124 |