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发明名称
Underwater breathing device with valved float
摘要
申请公布号
US3370586(A)
申请公布日期
1968.02.27
申请号
US19650460031
申请日期
1965.06.01
申请人
ARAGONA
发明人
ARAGONA ROBERT J.;FRYLING JEROME T.
分类号
B63C11/20
主分类号
B63C11/20
代理机构
代理人
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