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发明名称
PISTON RING
摘要
申请公布号
CA313528(A)
申请公布日期
1931.07.21
申请号
CAD313528
申请日期
申请人
THE RAMSEY ACCESSORIES MANUFACTURING CORPORATION
发明人
JOHN ARVER RAMSEY
分类号
主分类号
代理机构
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