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DREDGE
申请公布号:
SU1767097(A1)
申请号:
SU19894755212
申请日期:
1989.11.01
申请公布日期:
1992.10.07
申请人:
KRYUCHKOV OLEG S,SU
发明人:
KRYUCHKOV OLEG S,SU
分类号:
E02F3/88
主分类号:
E02F3/88
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