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经营范围
发明名称
Gyroscopic apparatus
摘要
申请公布号
US1931191(A)
申请公布日期
1933.10.17
申请号
US19290371805
申请日期
1929.06.18
申请人
GORDON GRAY JAMES
发明人
GRAY JAMES GORDON
分类号
B63B39/04
主分类号
B63B39/04
代理机构
代理人
主权项
地址
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