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经营范围
发明名称
Toy telephone
摘要
申请公布号
US1808037(A)
申请公布日期
1931.06.02
申请号
US19300484277
申请日期
1930.09.25
申请人
THE N. N. HILL BRASS COMPANY
发明人
HILL WYMAN N.
分类号
A63H33/30
主分类号
A63H33/30
代理机构
代理人
主权项
地址
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