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Application filed by 旭光学工業株式会社, ペトリエ工業株式会社filedCritical旭光学工業株式会社
Priority to JP1988058089UpriorityCriticalpatent/JPH0753061Y2/ja
Publication of JPH01164417UpublicationCriticalpatent/JPH01164417U/ja
Priority to US07/546,702prioritypatent/US5071242A/en
Priority to US07/648,141prioritypatent/US5196959A/en
Priority to US07/988,805prioritypatent/US5305141A/en
Application grantedgrantedCritical
Publication of JPH0753061Y2publicationCriticalpatent/JPH0753061Y2/ja