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Priority to JP12921690UpriorityCriticalpatent/JPH0483765U/ja
Priority to US07/797,901prioritypatent/US5172137A/en
Priority to DE4139445Aprioritypatent/DE4139445A1/de
Priority to GB9125492Aprioritypatent/GB2250717A/en
Publication of JPH0483765UpublicationCriticalpatent/JPH0483765U/ja