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经营范围
发明名称
Tongue switch
摘要
申请公布号
US1904206(A)
申请公布日期
1933.04.18
申请号
US19310577069
申请日期
1931.11.24
申请人
DIXON ISRAEL K
发明人
DIXON ISRAEL K.
分类号
E01B7/04
主分类号
E01B7/04
代理机构
代理人
主权项
地址
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