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发明名称
Method of and machine for making piston rings
摘要
申请公布号
US2566304(A)
申请公布日期
1951.09.04
申请号
US19430506342
申请日期
1943.10.15
申请人
BURD PISTON RING COMPANY
发明人
BATES ALBERT H.
分类号
B23P15/06
主分类号
B23P15/06
代理机构
代理人
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地址
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