Protective mask
Description
Claims
The ornamental design for a protective mask, as shown and described.
Referenced Cited
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Patent History
Patent number: D881379
Type: Grant
Filed: Dec 9, 2019
Date of Patent: Apr 14, 2020
Assignee: CHANGZHOU CHUDENG TRADING CO., LTD. (Changzhou)
Inventor: Han Zhan (Jiangsu)
Primary Examiner: Elizabeth J Oswecki
Application Number: 29/716,313
Type: Grant
Filed: Dec 9, 2019
Date of Patent: Apr 14, 2020
Assignee: CHANGZHOU CHUDENG TRADING CO., LTD. (Changzhou)
Inventor: Han Zhan (Jiangsu)
Primary Examiner: Elizabeth J Oswecki
Application Number: 29/716,313
Classifications