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Priority claimed from JP1207839Aexternal-prioritypatent/JP2565405B2/ja
Priority claimed from JP1313404Aexternal-prioritypatent/JP2589191B2/ja
Priority claimed from JP2064633Aexternal-prioritypatent/JPH03265798A/ja
Application filed by Toa Grout Kogyo Co, Iseki Kaihatsu KokifiledCriticalToa Grout Kogyo Co
Priority claimed from EP90308668Aexternal-prioritypatent/EP0413495B1/de
Application grantedgrantedCritical
Publication of ATE100549T1publicationCriticalpatent/ATE100549T1/de