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发明名称
Pattern for kaleidoscopic device
摘要
申请公布号
US2155565(A)
申请公布日期
1939.04.25
申请号
US19380198245
申请日期
1938.03.26
申请人
ERIKA ANNEMARIE MULERT
发明人
SCHMIDT WILHELM
分类号
A63J15/00
主分类号
A63J15/00
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代理人
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