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发明名称
Improvements in hydraulic tracing valve units
摘要
申请公布号
GB813171(A)
申请公布日期
1959.05.13
申请号
GB19540028919
申请日期
1954.10.07
申请人
HAYES ENGINEERS (LEEDS) LIMITED
发明人
HAYES HUBERT GEORGE
分类号
B23Q35/36
主分类号
B23Q35/36
代理机构
代理人
主权项
地址
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