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发明名称
TUBE ELEMENT FOR STEAM BOILERS, ECONOMIZERS OR THE LIKE
摘要
申请公布号
CA503639(A)
申请公布日期
1954.06.15
申请号
CAD503639
申请日期
申请人
GIOVANNI ROSSI
发明人
GIOVANNI ROSSI
分类号
主分类号
代理机构
代理人
主权项
地址
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