CN209997398U - 一种滚刷料轮式负压清扫管道防堵塞装置 - Google Patents
一种滚刷料轮式负压清扫管道防堵塞装置 Download PDFInfo
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- CN209997398U CN209997398U CN201920668834.8U CN201920668834U CN209997398U CN 209997398 U CN209997398 U CN 209997398U CN 201920668834 U CN201920668834 U CN 201920668834U CN 209997398 U CN209997398 U CN 209997398U
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- negative pressure
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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: An anti blocking device of roller brush material wheel type negative pressure cleaning pipeline Effective date of registration: 20210223 Granted publication date: 20200131 Pledgee: Xuzhou Productivity Promotion Center Pledgor: JIANGSU HUAZHENG ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021980001262 |
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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: 20220816 Granted publication date: 20200131 Pledgee: Xuzhou Productivity Promotion Center Pledgor: JIANGSU HUAZHENG ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021980001262 |