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发明名称
PISTON EXPANDING DEVICES
摘要
申请公布号
CA488913(A)
申请公布日期
1952.12.16
申请号
CAD488913
申请日期
申请人
MCQUAY-NORRIS MANUFACTURING COMPANY
发明人
GEORGE C. MAYFIELD
分类号
主分类号
代理机构
代理人
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