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发明名称
HATCHWAY OF MANHOLE
摘要
申请公布号
SU735707(A1)
申请公布日期
1980.05.25
申请号
SU19772550289
申请日期
1977.11.30
申请人
ZAVOD "VODOPRIBOR"
发明人
GORBULSKIJ GRIGORIJ F,SU;BRYKOV VIKTOR G,SU;LIMITOVSKIJ ALEKSANDR B,SU;ERSHOV VALENTIN V,SU
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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