Face mask with supporting strip | Patent Publication Number 20210162243

US 20210162243 A1
Patent NumberUS 11969611 B2
Application Number16950939
Filled DateNov 18, 2020
Priority DateNov 18, 2020
Publication DateJun 3, 2021
Original Assignee
Current Assignee
Inventor/ApplicantsChin-Lung YANG
Chin-Lung Yang
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