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发明名称
Life belt
摘要
申请公布号
US1827057(A)
申请公布日期
1931.10.13
申请号
US19300471315
申请日期
1930.07.28
申请人
WILLS SILAS D
发明人
WILLS SILAS D.
分类号
B63C9/125;B63C9/15
主分类号
B63C9/125
代理机构
代理人
主权项
地址
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