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发明名称
Improvements in or relating to pipe jointing means
摘要
申请公布号
GB697735(A)
申请公布日期
1953.09.30
申请号
GB19500021768
申请日期
1950.09.04
申请人
BATTISTA ZAVALLONI;FEDERICO VALDUCCI
发明人
分类号
F16L37/54
主分类号
F16L37/54
代理机构
代理人
主权项
地址
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