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经营范围
发明名称
Method and apparatus for replacing a seal in an expandable heat exchanger shell
摘要
申请公布号
US3231012(A)
申请公布日期
1966.01.25
申请号
US19630320044
申请日期
1963.10.30
申请人
PFAUDLER PERMUTIT INC.
发明人
NORRIS CARL W.
分类号
F28F9/00
主分类号
F28F9/00
代理机构
代理人
主权项
地址
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