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Priority claimed from US08/003,158external-prioritypatent/US5503673A/en
Application filed by 麦克尼尔-Ppc公司filedCritical麦克尼尔-Ppc公司
Publication of HK1002529A1publicationCriticalpatent/HK1002529A1/zh
Publication of HK1002529BpublicationCriticalpatent/HK1002529B/zh