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Priority to JP1976119340UpriorityCriticalpatent/JPS5337703U/ja
Publication of JPS5337703UpublicationCriticalpatent/JPS5337703U/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