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Application filedfiledCritical
Priority to JP1635085UpriorityCriticalpatent/JPH0417736Y2/ja
Priority to US06/827,788prioritypatent/US4707007A/en
Priority to CA000501413Aprioritypatent/CA1266070A/en
Publication of JPS61133668UpublicationCriticalpatent/JPS61133668U/ja
Application grantedgrantedCritical
Publication of JPH0417736Y2publicationCriticalpatent/JPH0417736Y2/ja
