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经营范围
发明名称
Piston-rings
摘要
申请公布号
GB439353(A)
申请公布日期
1935.12.05
申请号
GB19340013504
申请日期
1935.05.04
申请人
WELLWORTHY LIMITED;JOHN WILLIAM HOWLETT
发明人
分类号
F16J9/20
主分类号
F16J9/20
代理机构
代理人
主权项
地址
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