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经营范围
发明名称
LAMP FILAMENT TREATING APPARATUS
摘要
申请公布号
CA392027(A)
申请公布日期
1940.10.22
申请号
CAD392027
申请日期
申请人
CANADIAN GENERAL ELECTRIC COMPANY
发明人
WILLIAM P. ZABEL
分类号
主分类号
代理机构
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