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发明名称
Paraffin liquefying device
摘要
申请公布号
US1888125(A)
申请公布日期
1932.11.15
申请号
US19310535023
申请日期
1931.05.04
申请人
HART BROTHERS AND COMPANY
发明人
HART WILLIAM J.
分类号
E21B36/00
主分类号
E21B36/00
代理机构
代理人
主权项
地址
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