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Application filedfiledCritical
Priority to JP1989069292UpriorityCriticalpatent/JP2533070Y2/ja
Priority to US07/533,776prioritypatent/US5043540A/en
Priority to CA002018660Aprioritypatent/CA2018660C/en
Priority to GB9013059Aprioritypatent/GB2232818B/en
Priority to DE4018978Aprioritypatent/DE4018978C2/de
Publication of JPH038832UpublicationCriticalpatent/JPH038832U/ja
Priority to SG75294Aprioritypatent/SG75294G/en
Priority to HK92294Aprioritypatent/HK92294A/xx
Application grantedgrantedCritical
Publication of JP2533070Y2publicationCriticalpatent/JP2533070Y2/ja