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经营范围
发明名称
Improvements in or relating to piston rings
摘要
申请公布号
GB708562(A)
申请公布日期
1954.05.05
申请号
GB19510028133
申请日期
1951.11.30
申请人
AKTIENGESELLSCHAFT FUR BERGBAU-UND HUTTENBEDARF
发明人
分类号
F16J9/26
主分类号
F16J9/26
代理机构
代理人
主权项
地址
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