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Priority claimed from US13/632,538external-prioritypatent/US9045935B2/en
Application filed by Skyfold Inc.filedCriticalSkyfold Inc.
Publication of HK1214321A1publicationCriticalpatent/HK1214321A1/zh
Publication of HK1214321BpublicationCriticalpatent/HK1214321B/zh