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发明名称
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摘要
申请公布号
US2023236(A)
申请公布日期
1935.12.03
申请号
US19320636507
申请日期
1932.10.06
申请人
MAIER ERICH R F
发明人
MAIER ERICH R. F.
分类号
B63B1/04
主分类号
B63B1/04
代理机构
代理人
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