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发明名称
SAFETY CLEANOUT PLUG FOR SEWER SYSTEMS
摘要
申请公布号
US3610287(A)
申请公布日期
1971.10.05
申请号
USD3610287
申请日期
1970.03.03
申请人
LEWIS V. ALLGOOD
发明人
LEWIS V. ALLGOOD
分类号
F16L55/136;(IPC1-7):F16L55/10
主分类号
F16L55/136
代理机构
代理人
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地址
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