Face mask and method for manufacturing thereof
AC Tsuei, AC Tsuei, FY Tsuei - US Patent 11,944,138, 2024 - Google Patents
A face mask and a method for manufacturing the face mask are disclosed. The face mask
comprises a sheet, a first lateral flap, a second lateral flap, a first loop, a second loop and an …
comprises a sheet, a first lateral flap, a second lateral flap, a first loop, a second loop and an …