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摘要
申请公布号
US2935805(A)
申请公布日期
1960.05.10
申请号
US19590816228
申请日期
1959.05.27
申请人
GIESON DAVID W VAN
发明人
GIESON DAVID W. VAN
分类号
B42F21/00
主分类号
B42F21/00
代理机构
代理人
主权项
地址
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