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Priority to JP1987153326UpriorityCriticalpatent/JPH0540479Y2/ja
Priority to DE3828639Aprioritypatent/DE3828639C2/de
Priority to DE3844716Aprioritypatent/DE3844716C2/de
Publication of JPH0158200UpublicationCriticalpatent/JPH0158200U/ja
Priority to US07/637,950prioritypatent/US5039867A/en
Application grantedgrantedCritical
Publication of JPH0540479Y2publicationCriticalpatent/JPH0540479Y2/ja