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发明名称
Noisemaker building block
摘要
申请公布号
US2550270(A)
申请公布日期
1951.04.24
申请号
US19450603699
申请日期
1945.07.07
申请人
GEORGE JENTZEN
发明人
JENTZEN GEORGE
分类号
A63H33/04
主分类号
A63H33/04
代理机构
代理人
主权项
地址
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