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发明名称
CYLINDRICAL PLUG GAUGE WEAR TESTING DEVICE
摘要
申请公布号
CA426441(A)
申请公布日期
1945.03.27
申请号
CAD426441
申请日期
申请人
N. A. WOODWORTH COMPANY
发明人
GEORGE HOHWART
分类号
主分类号
代理机构
代理人
主权项
地址
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