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发明名称
Improvements in or relating to piston ring making machine and process
摘要
申请公布号
GB767342(A)
申请公布日期
1957.01.30
申请号
GB19540026770
申请日期
1954.09.15
申请人
THOMPSON PRODUCTS, INC.
发明人
NORTON SAMUEL H.
分类号
B23P15/06
主分类号
B23P15/06
代理机构
代理人
主权项
地址
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