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摘要
申请公布号
US2359376(A)
申请公布日期
1944.10.03
申请号
US19430471549
申请日期
1943.01.07
申请人
MARTIN ALFRED M
发明人
MARTIN ALFRED M.
分类号
B42F17/18
主分类号
B42F17/18
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