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发明名称
PROTECTION FOR UNDERGROUND PIPES
摘要
申请公布号
US3490497(A)
申请公布日期
1970.01.20
申请号
USD3490497
申请日期
1966.08.01
申请人
TRENTON CORP.:THE
发明人
TED KENNEDY JR.
分类号
F16L58/16;(IPC1-7):C23F13/00;F16L58/00
主分类号
F16L58/16
代理机构
代理人
主权项
地址
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