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发明名称
Pipe Seal
摘要
申请公布号
CA2131092(A1)
申请公布日期
1993.09.06
申请号
CA19922131092
申请日期
1992.12.03
申请人
NORTHERN ILLINOIS GAS CO
发明人
GOAD ROBERT L;MAROTTA RONALD G
分类号
B66C1/42;F16L55/18;(IPC1-7):F16L55/168
主分类号
B66C1/42
代理机构
代理人
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地址
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