PORTABLE POWER ROTARY DEVICE PROVIDED WITH DRILL HAVING EARTHWORK AND CUT-OFF FUNCTIONS

The present invention relates to a rotary device in which a drill for soil earthwork is rotatably mounted, wherein the drill comprises: a shaft part; a screw, formed along the outer circumferential surface of the shaft part, for earthwork and the transportation of soil generated by the earthwork; a...

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Bibliographische Detailangaben
1. Verfasser: KIM, YOUNG GOAN
Format: Patent
Sprache:eng ; fre ; kor
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