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Priority to JP1989004195UpriorityCriticalpatent/JPH0297581U/ja
Publication of JPH0297581UpublicationCriticalpatent/JPH0297581U/ja
E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
