CN209917456U - 制氢用水环真空泵循环水净化装置 - Google Patents
制氢用水环真空泵循环水净化装置 Download PDFInfo
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- CN209917456U CN209917456U CN201922202127.2U CN201922202127U CN209917456U CN 209917456 U CN209917456 U CN 209917456U CN 201922202127 U CN201922202127 U CN 201922202127U CN 209917456 U CN209917456 U CN 209917456U
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GR01 | Patent grant | ||
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PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Circulating water purification device of water ring vacuum pump for hydrogen production Effective date of registration: 20220616 Granted publication date: 20200110 Pledgee: Shandong Guangrao Rural Commercial Bank Co.,Ltd. Pledgor: GUANGRAO KELIDA PETROCHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980007920 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230628 Granted publication date: 20200110 Pledgee: Shandong Guangrao Rural Commercial Bank Co.,Ltd. Pledgor: GUANGRAO KELIDA PETROCHEMICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980007920 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |