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发明名称
DRAFT GEAR
摘要
申请公布号
CA336162(A)
申请公布日期
1933.10.03
申请号
CAD336162
申请日期
申请人
THE NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
ERNEST HENRY SCHMIDT;HUBERT DE LASERRE SPENCE
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主分类号
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