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经营范围
发明名称
Swimming instruction apparatus
摘要
申请公布号
US2434542(A)
申请公布日期
1948.01.13
申请号
US19450588965
申请日期
1945.04.18
申请人
BORROUGHS JOSEPH N
发明人
BORROUGHS JOSEPH N.
分类号
A63B21/00;A63B69/10
主分类号
A63B21/00
代理机构
代理人
主权项
地址
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