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发明名称
Track tool
摘要
申请公布号
US1925203(A)
申请公布日期
1933.09.05
申请号
US19320636212
申请日期
1932.10.04
申请人
QUESENBERRY HENRY C
发明人
QUESENBERRY HENRY C.
分类号
E01B29/22
主分类号
E01B29/22
代理机构
代理人
主权项
地址
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