CN211854392U - 一种可进行自控进出风流量的通风管道 - Google Patents
一种可进行自控进出风流量的通风管道 Download PDFInfo
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- CN211854392U CN211854392U CN202020089478.7U CN202020089478U CN211854392U CN 211854392 U CN211854392 U CN 211854392U CN 202020089478 U CN202020089478 U CN 202020089478U CN 211854392 U CN211854392 U CN 211854392U
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210413 Address after: 226000 south of Qiantangjiang road and east of Nanhai Road, tongzhouwan demonstration zone, Nantong City, Jiangsu Province Patentee after: Jiangsu Chenda Semiconductor Technology Co.,Ltd. Address before: No. 124, lijiazhuangzi village, Xumeng Town, Wulian County, Rizhao City, Shandong Province 262300 Patentee before: Li Zhengguo |
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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: The utility model relates to a ventilation pipe which can automatically control the inlet and outlet air flow Effective date of registration: 20220126 Granted publication date: 20201103 Pledgee: Nantong Jiangsu rural commercial bank Limited by Share Ltd. Pledgor: Jiangsu Chenda Semiconductor Technology Co.,Ltd. Registration number: Y2022980001148 |
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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: 20230831 Granted publication date: 20201103 Pledgee: Nantong Jiangsu rural commercial bank Limited by Share Ltd. Pledgor: Jiangsu Chenda Semiconductor Technology Co.,Ltd. Registration number: Y2022980001148 |