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发明名称
Portable gangplank and dock
摘要
申请公布号
US2964767(A)
申请公布日期
1960.12.20
申请号
US19580777947
申请日期
1958.12.03
申请人
EGBERT JACK K
发明人
EGBERT JACK K.
分类号
B63B27/14
主分类号
B63B27/14
代理机构
代理人
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地址
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