CN210547758U - 一种煤矿液压支架中缸筒专用锻压模具 - Google Patents
一种煤矿液压支架中缸筒专用锻压模具 Download PDFInfo
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CN110125301A (zh) * | 2019-04-29 | 2019-08-16 | 邓州市良机锻压设备制造有限公司 | 一种煤矿液压支架中缸筒专用锻压模具以及锻压方法 |
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CN110125301A (zh) * | 2019-04-29 | 2019-08-16 | 邓州市良机锻压设备制造有限公司 | 一种煤矿液压支架中缸筒专用锻压模具以及锻压方法 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A special forging die for the middle cylinder of a coal mine hydraulic support Effective date of registration: 20220914 Granted publication date: 20200519 Pledgee: Bank of China Limited Dengzhou sub branch Pledgor: DENGZHOU LIANGJI FORGING AND STAMPING EQUIPMENT MANUFACTURING CO.,LTD. Registration number: Y2022980015127 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230823 Granted publication date: 20200519 Pledgee: Bank of China Limited Dengzhou sub branch Pledgor: DENGZHOU LIANGJI FORGING AND STAMPING EQUIPMENT MANUFACTURING CO.,LTD. Registration number: Y2022980015127 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Special Forging Die for Cylinder Barrel in Coal Mine Hydraulic Support Effective date of registration: 20230828 Granted publication date: 20200519 Pledgee: Bank of China Limited Dengzhou sub branch Pledgor: DENGZHOU LIANGJI FORGING AND STAMPING EQUIPMENT MANUFACTURING CO.,LTD. Registration number: Y2023980053823 |