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Priority to JP7934989UpriorityCriticalpatent/JPH0317522U/ja
Priority to DE69012672Tprioritypatent/DE69012672T2/de
Priority to US07/542,984prioritypatent/US5053745A/en
Priority to EP90112061Aprioritypatent/EP0405414B1/en
Publication of JPH0317522UpublicationCriticalpatent/JPH0317522U/ja