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经营范围
发明名称
Breathing apparatus for swimmers
摘要
申请公布号
US2317236(A)
申请公布日期
1943.04.20
申请号
US19400326684
申请日期
1940.03.29
申请人
WILEN CHARLES H;ALEXANDRE KRAMARENKO
发明人
WILEN CHARLES H.;KRAMARENKO ALEXANDRE
分类号
B63C11/20
主分类号
B63C11/20
代理机构
代理人
主权项
地址
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