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经营范围
发明名称
BRIDGING APPARATUS
摘要
申请公布号
GB8726189(D0)
申请公布日期
1987.12.16
申请号
GB19870026189
申请日期
1987.11.09
申请人
WILLIAMS, A A
发明人
分类号
E01D15/127
主分类号
E01D15/127
代理机构
代理人
主权项
地址
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