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经营范围
发明名称
CEMENT-LINED PIPE HAVING END INSERTS ASSOCIATED THEREWITH
摘要
申请公布号
US3516447(A)
申请公布日期
1970.06.23
申请号
USD3516447
申请日期
1967.11.01
申请人
PERMIAN ENTERPRISES INC.
发明人
JAMES H. PITTMAN JR.
分类号
F16L57/06;(IPC1-7):F16L9/00;B65D59/00;F16L9/14
主分类号
F16L57/06
代理机构
代理人
主权项
地址
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