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发明名称
METHOD FOR DETECTING CLEVAGE IN MINING WORKING ROOFS
摘要
申请公布号
SU1008445(A1)
申请公布日期
1983.03.30
申请号
SU19813359155
申请日期
1981.11.30
申请人
MO GORNYJ INSTITUT
发明人
YAMSHCHIKOV VALERIJ S,SU;SHVARTSMAN BORIS I,SU;SHKURATNIK VLADIMIR L,SU;VIGDORCHIK MIKHAIL D,SU
分类号
E21C39/00;(IPC1-7):E21C39/00
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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