CN212944394U - 一种石墨电极螺纹孔吹扫装置 - Google Patents
一种石墨电极螺纹孔吹扫装置 Download PDFInfo
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- CN212944394U CN212944394U CN202021277878.7U CN202021277878U CN212944394U CN 212944394 U CN212944394 U CN 212944394U CN 202021277878 U CN202021277878 U CN 202021277878U CN 212944394 U CN212944394 U CN 212944394U
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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 graphite electrode threaded hole purging device Effective date of registration: 20220824 Granted publication date: 20210413 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shuozhou branch Pledgor: Datong Yulin De Graphite New Materials Co.,Ltd. Registration number: Y2022140000046 |
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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: 20230920 Granted publication date: 20210413 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shuozhou branch Pledgor: Datong Yulin De Graphite New Materials Co.,Ltd. Registration number: Y2022140000046 |
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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 graphite electrode threaded hole blowing device Effective date of registration: 20230921 Granted publication date: 20210413 Pledgee: Shanghai Pudong Development Bank Co.,Ltd. Shuozhou branch Pledgor: Datong Yulin De Graphite New Materials Co.,Ltd. Registration number: Y2023140000055 |