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经营范围
发明名称
Flexible sealing joint
摘要
申请公布号
US2433652(A)
申请公布日期
1947.12.30
申请号
US19440538272
申请日期
1944.06.01
申请人
CROM JOHN M
发明人
CROM JOHN M.
分类号
E04B1/68
主分类号
E04B1/68
代理机构
代理人
主权项
地址
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