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经营范围
发明名称
Toy helicopter
摘要
申请公布号
US2537393(A)
申请公布日期
1951.01.09
申请号
US19460686764
申请日期
1946.07.27
申请人
BISCH PAUL E;DOBBINS DAVID T
发明人
BISCH PAUL E.;DOBBINS DAVID T.
分类号
A63H27/133
主分类号
A63H27/133
代理机构
代理人
主权项
地址
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