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经营范围
发明名称
VIBRATION CLAMSHELL FOR PERCUSSION-ROPE DRILLING MACHINE
摘要
申请公布号
SU604903(A1)
申请公布日期
1978.04.30
申请号
SU19752192067
申请日期
1975.11.24
申请人
VNII GIDROMEKHANIZATSII,CAHôTAPHOTEXHôÚECKôX ô CüE|ôAóÓHÕX CTPOôTEóÓHÕX PA¬OT
发明人
VERSTOV VLADIMIR V,SU;PEVZNER MOISEJ Z,SU
分类号
E21B1/00;E02B1/00;E02D9/02;E21B27/00;(IPC1-7):E02D9/02
主分类号
E21B1/00
代理机构
代理人
主权项
地址
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