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经营范围
发明名称
TUBEETYPE HEATTEXCHANGE PIPE WITH FINS
摘要
申请公布号
JPS52125862(A)
申请公布日期
1977.10.22
申请号
JP19760041289
申请日期
1976.04.14
申请人
HITACHI LTD
发明人
SAYAMA GENJI;OCHIAI IZUMI
分类号
B21C37/26;B21C37/22;B21D53/06;B23B1/00;F28F1/36
主分类号
B21C37/26
代理机构
代理人
主权项
地址
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