CN212393933U - 一种文丘里负压口罩 - Google Patents
一种文丘里负压口罩 Download PDFInfo
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- CN212393933U CN212393933U CN202020526329.2U CN202020526329U CN212393933U CN 212393933 U CN212393933 U CN 212393933U CN 202020526329 U CN202020526329 U CN 202020526329U CN 212393933 U CN212393933 U CN 212393933U
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- mouth
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Application Number | Priority Date | Filing Date | Title |
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CN202020526329.2U CN212393933U (zh) | 2020-04-13 | 2020-04-13 | 一种文丘里负压口罩 |
PCT/CN2021/082881 WO2021208693A1 (zh) | 2020-04-13 | 2021-03-25 | 一种文丘里负压口罩 |
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CN202020526329.2U CN212393933U (zh) | 2020-04-13 | 2020-04-13 | 一种文丘里负压口罩 |
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CN212393933U true CN212393933U (zh) | 2021-01-26 |
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CN202020526329.2U Active CN212393933U (zh) | 2020-04-13 | 2020-04-13 | 一种文丘里负压口罩 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2021208693A1 (zh) * | 2020-04-13 | 2021-10-21 | 广东金发科技有限公司 | 一种文丘里负压口罩 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021208693A1 (zh) * | 2020-04-13 | 2021-10-21 | 广东金发科技有限公司 | 一种文丘里负压口罩 |
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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: 20210506 Address after: 511500 28 de long avenue, Shek Kok town, Qingcheng District, Qingyuan, Guangdong Patentee after: GUANGDONG KINGFA TECHNOLOGY Co.,Ltd. Address before: 414000 dormitory of Yueyanglou District, Yueyang City, Hunan Province Patentee before: Hua Zirui |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230509 Address after: 414000 dormitory of Yueyanglou District, Yueyang City, Hunan Province Patentee after: Hua Zirui Address before: 511500 28 de long avenue, Shek Kok town, Qingcheng District, Qingyuan, Guangdong Patentee before: GUANGDONG KINGFA TECHNOLOGY Co.,Ltd. |