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发明名称
Procédé et dispositif de formation d'un bouchon creux de glace dans une conduite d'eau
摘要
申请公布号
FR919082(A)
申请公布日期
1947.02.26
申请号
FRD919082
申请日期
1945.12.17
申请人
FREEZ SEAL EQUIPMENT COMPANY LIMITED
发明人
分类号
F16L55/103
主分类号
F16L55/103
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代理人
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