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经营范围
发明名称
BRIDGE PLATE LIFTING DEVICE
摘要
申请公布号
US3556020(A)
申请公布日期
1971.01.19
申请号
USD3556020
申请日期
1969.02.19
申请人
ROBERT M. AKERS
发明人
ROBERT M. AKERS
分类号
B61D3/18;(IPC1-7):B61D47/00;E01D15/00
主分类号
B61D3/18
代理机构
代理人
主权项
地址
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