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发明名称
Frog tie plate
摘要
申请公布号
US1799353(A)
申请公布日期
1931.04.07
申请号
US19300437646
申请日期
1930.03.21
申请人
CARUTHERS EUGENE W
发明人
CARUTHERS EUGENE W.
分类号
E01B7/22
主分类号
E01B7/22
代理机构
代理人
主权项
地址
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