Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
특허권은 발명가에게 그의 발명을 보호할 수 있는 권리를 부여합니다.teukheogwoneun balmeongaege geuui balmyeongeul bohohal su itneun gwonrireul buyeohamnida.Patent rights grant inventors the right to protect their inventions.