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经营范围
发明名称
Constant tension device for boat falls
摘要
申请公布号
US2948512(A)
申请公布日期
1960.08.09
申请号
US19570672524
申请日期
1957.07.17
申请人
CRENSHAW JR RUSSELL S
发明人
JR. RUSSELL S. CRENSHAW,
分类号
B63B23/18
主分类号
B63B23/18
代理机构
代理人
主权项
地址
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