Description
: Full text of "Official gazette of the United States Patent Full text of "Official gazette of the United States Patent and Trademark Office: [microform]" See other formatsType
: Disposable / ReusableFunction
: Coronavirus, Anti-pollution, PM2.5, cold, dust, pollen, allergyPackage
: 10pcs/20pcs/50pcs per packCertification
: CE, FDA, ISOMin Order
: 1000 Pieces