CN209974520U - 一种自清洁式曝气生物滤池 - Google Patents
一种自清洁式曝气生物滤池 Download PDFInfo
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- CN209974520U CN209974520U CN201822041878.6U CN201822041878U CN209974520U CN 209974520 U CN209974520 U CN 209974520U CN 201822041878 U CN201822041878 U CN 201822041878U CN 209974520 U CN209974520 U CN 209974520U
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CN201822041878.6U CN209974520U (zh) | 2018-12-06 | 2018-12-06 | 一种自清洁式曝气生物滤池 |
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CN209974520U true CN209974520U (zh) | 2020-01-21 |
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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: Self-cleaning biological aerated filter Effective date of registration: 20200702 Granted publication date: 20200121 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: SHANDONG GUOCHEN INDUSTRIAL GROUP Co.,Ltd. Registration number: Y2020980003736 |
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PE01 | Entry into force 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: 20220711 Granted publication date: 20200121 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: SHANDONG GUOCHEN INDUSTRIAL GROUP Co.,Ltd. Registration number: Y2020980003736 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |