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专利名称：Device for vibrating the soil发明人：Joris Kniep申请号：US05/808444申请日：19770621公开号：US04126999A公开日：19781128
摘要：The ground vibrator comprises a rod to be inserted into the ground and havingat its end axial resonance plates, which are brought into vibration by means of a vibrationsource arranged at the top end of the rod.
The vibration effect of the resonance plates is improved, when the direction ofvibration of the vibration source exhibits a departure from the longitudinal axis of therod.
申请人：KNIEP; JORIS
代理人：Lewis H. Eslinger
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