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经营范围
发明名称
SEALING SYSTEM FOR UNDERWATER INSTALLATION
摘要
申请公布号
US3485056(A)
申请公布日期
1969.12.23
申请号
USD3485056
申请日期
1968.09.19
申请人
LOCKHEED AIRCRAFT CORP.
发明人
SYDNEY S. HELMUS
分类号
E21B33/037;E21B41/06;F16J15/06;F16J15/10;(IPC1-7):B63C11/00
主分类号
E21B33/037
代理机构
代理人
主权项
地址
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