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发明名称
MANUFACTURE OF POPPET VALVES
摘要
申请公布号
GB1341394(A)
申请公布日期
1973.12.19
申请号
GBD1341394
申请日期
1970.08.21
申请人
HIGHER SPEED METALLS LTD
发明人
分类号
B21J13/02;B21J13/04;B21K1/22;(IPC1-7):B21K1/22
主分类号
B21J13/02
代理机构
代理人
主权项
地址
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