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发明名称
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摘要
申请公布号
US2507932(A)
申请公布日期
1950.05.16
申请号
US19470772303
申请日期
1947.09.05
申请人
POPOWICH NICHOLAS J
发明人
POPOWICH NICHOLAS J.
分类号
A41F1/00
主分类号
A41F1/00
代理机构
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