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经营范围
发明名称
Collar splitter
摘要
申请公布号
US1790783(A)
申请公布日期
1931.02.03
申请号
US19290366907
申请日期
1929.05.29
申请人
PAUL YUNGLING
发明人
YUNGLING PAUL
分类号
E21B29/00
主分类号
E21B29/00
代理机构
代理人
主权项
地址
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