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发明名称
Teeter totter
摘要
申请公布号
US2109897(A)
申请公布日期
1938.03.01
申请号
US19370172015
申请日期
1937.10.30
申请人
WALTER TRIPKE
发明人
BRAUNSCHWEIG FRED
分类号
A63G11/00
主分类号
A63G11/00
代理机构
代理人
主权项
地址
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