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Priority to JP4267389UpriorityCriticalpatent/JPH02133437U/ja
Priority to GB9008097Aprioritypatent/GB2230489A/en
Priority to KR1019900004896Aprioritypatent/KR0157318B1/ko
Priority to US07/506,803prioritypatent/US5048767A/en
Priority to DE4011975Aprioritypatent/DE4011975A1/de
Publication of JPH02133437UpublicationCriticalpatent/JPH02133437U/ja
