CN214657579U - 一种市政道路排水管道优化装置 - Google Patents
一种市政道路排水管道优化装置 Download PDFInfo
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- CN214657579U CN214657579U CN202120874777.6U CN202120874777U CN214657579U CN 214657579 U CN214657579 U CN 214657579U CN 202120874777 U CN202120874777 U CN 202120874777U CN 214657579 U CN214657579 U CN 214657579U
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- 230000008595 infiltration Effects 0.000 abstract description 4
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CN202120874777.6U CN214657579U (zh) | 2021-04-26 | 2021-04-26 | 一种市政道路排水管道优化装置 |
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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 |
Denomination of utility model: An optimization device for municipal road drainage pipeline Effective date of registration: 20230106 Granted publication date: 20211109 Pledgee: Ping An Bank Co.,Ltd. Dongguan Branch Pledgor: Wanrong Construction Industry Group Co.,Ltd. Registration number: Y2023980030381 |
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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 |
Granted publication date: 20211109 Pledgee: Ping An Bank Co.,Ltd. Dongguan Branch Pledgor: Wanrong Construction Industry Group Co.,Ltd. Registration number: Y2023980030381 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |