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发明名称
DRAFT GEAR
摘要
申请公布号
CA344594(A)
申请公布日期
1934.09.11
申请号
CAD344594
申请日期
申请人
THE NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
ERNEST HENRY SCHMIDT
分类号
主分类号
代理机构
代理人
主权项
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