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发明名称
Cast iron annulus and method of manufacturing the same
摘要
申请公布号
US1953180(A)
申请公布日期
1934.04.03
申请号
US19320629742
申请日期
1932.08.20
申请人
UNITED STATES PIPE AND FOUNDRY COMPANY
发明人
LANGENBERG FREDERICK C.;REDDICK HERBERT G.
分类号
C22C37/10
主分类号
C22C37/10
代理机构
代理人
主权项
地址
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