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发明名称
Sparking gyroscope
摘要
申请公布号
US2039819(A)
申请公布日期
1936.05.05
申请号
US19350003234
申请日期
1935.01.24
申请人
LOUIS MARX
发明人
MARX LOUIS
分类号
A63H1/24;A63H33/36
主分类号
A63H1/24
代理机构
代理人
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地址
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