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经营范围
发明名称
MULTIPASSAGE PIPE
摘要
申请公布号
US3625258(A)
申请公布日期
1971.12.07
申请号
USD3625258
申请日期
1970.03.16
申请人
WARREN PETROLEUM CORP.
发明人
REX V. PHELPS
分类号
F16L9/18;(IPC1-7):F16L9/18
主分类号
F16L9/18
代理机构
代理人
主权项
地址
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