CN202090826U - 一种具有防泥水渗入功能的旋挖钻机动力头 - Google Patents
一种具有防泥水渗入功能的旋挖钻机动力头 Download PDFInfo
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- CN202090826U CN202090826U CN2011201077159U CN201120107715U CN202090826U CN 202090826 U CN202090826 U CN 202090826U CN 2011201077159 U CN2011201077159 U CN 2011201077159U CN 201120107715 U CN201120107715 U CN 201120107715U CN 202090826 U CN202090826 U CN 202090826U
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CN2011201077159U CN202090826U (zh) | 2011-04-13 | 2011-04-13 | 一种具有防泥水渗入功能的旋挖钻机动力头 |
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CN2011201077159U CN202090826U (zh) | 2011-04-13 | 2011-04-13 | 一种具有防泥水渗入功能的旋挖钻机动力头 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102877786A (zh) * | 2012-10-09 | 2013-01-16 | 大元建业集团股份有限公司 | 一种提高旋挖钻机成孔效率的方法和装置 |
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2011
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102877786A (zh) * | 2012-10-09 | 2013-01-16 | 大元建业集团股份有限公司 | 一种提高旋挖钻机成孔效率的方法和装置 |
CN102877786B (zh) * | 2012-10-09 | 2015-02-11 | 大元建业集团股份有限公司 | 一种提高旋挖钻机成孔效率的方法和装置 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG FOUNDATION ENGINEERING GROUP CO., LTD. Free format text: FORMER NAME: GUANGDONG PROV. FOUNDATION ENGINEERING CO. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 19-20, No. 510620, Tianhe Road, 99 Tianhe Road, Guangdong, Guangzhou Patentee after: Foundation Design Group Co., Ltd of Guangdong Province Address before: 19-20, No. 510620, Tianhe Road, 99 Tianhe Road, Guangdong, Guangzhou Patentee before: Guangdong Prov. Foundation Engineering Co. |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20190413 |