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发明名称
Protective switch member
摘要
申请公布号
US1758519(A)
申请公布日期
1930.05.13
申请号
US19290399438
申请日期
1929.10.14
申请人
JANVILLE HENRY M
发明人
JANVILLE HENRY M.
分类号
E01B7/20
主分类号
E01B7/20
代理机构
代理人
主权项
地址
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