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发明名称
SAFETY DEVICE FOR BOAT HOISTS
摘要
申请公布号
CA437568(A)
申请公布日期
1946.10.29
申请号
CAD437568
申请日期
申请人
ALBERT R. WILHELM
发明人
ALBERT R. WILHELM
分类号
主分类号
代理机构
代理人
主权项
地址
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