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经营范围
发明名称
Animated whistle
摘要
申请公布号
US2503818(A)
申请公布日期
1950.04.11
申请号
US19470787221
申请日期
1947.11.20
申请人
GRANT JR ROBERT Y
发明人
JR. ROBERT Y. GRANT,
分类号
A63H5/00
主分类号
A63H5/00
代理机构
代理人
主权项
地址
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