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经营范围
发明名称
Paraffin scraper
摘要
申请公布号
US2728398(A)
申请公布日期
1955.12.27
申请号
US19540419278
申请日期
1954.03.29
申请人
TAYLOR JULIAN S
发明人
TAYLOR JULIAN S.
分类号
E21B37/02
主分类号
E21B37/02
代理机构
代理人
主权项
地址
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