Brevetto Immagine N° brevetto Nome brevetto Tipo di brevetto Data di disponibilità --- Data di scadenza Verificato ZL201930134868.4 cellphone case with calculator and piano APPEARANCE_DESIGN 2019-03-27 ~ 2021-03-26 ZL 2019 3 0134868.4 phone case with calculator and piano APPEARANCE_DESIGN 2019-03-27 ~ ZL 2019 3 0028544.2 phone case with cover, sopport, and calculator APPEARANCE_DESIGN 2019-05-27 ~ 2029-05-27 ZL 2019 3 0134868.4 phone case with calculator and piano APPEARANCE_DESIGN 2019-07-18 ~ 2029-07-18 ZL 2019 3 0020600.8 phone case with calculator APPEARANCE_DESIGN 2019-06-10 ~ 2029-06-10 Ricerca e sviluppo There is/are 5 - 10 People R&D Engineer(s) in the company.