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发明名称
Bridge operating mechanism
摘要
申请公布号
US2191708(A)
申请公布日期
1940.02.27
申请号
US19360116581
申请日期
1936.12.18
申请人
DUNFORD JOHN A
发明人
DUNFORD JOHN A.
分类号
E01D15/06
主分类号
E01D15/06
代理机构
代理人
主权项
地址
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