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发明名称
Swimming tube
摘要
申请公布号
US1756383(A)
申请公布日期
1930.04.29
申请号
US19290356729
申请日期
1929.04.20
申请人
PETZ WILLIAM B
发明人
PETZ WILLIAM B.
分类号
B63C9/15
主分类号
B63C9/15
代理机构
代理人
主权项
地址
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