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经营范围
发明名称
Vacuum apparatus
摘要
申请公布号
US2037535(A)
申请公布日期
1936.04.14
申请号
US19330691165
申请日期
1933.09.27
申请人
GENERAL ELECTRIC COMPANY
发明人
RANKIN WILLIAM K.
分类号
H01H51/28
主分类号
H01H51/28
代理机构
代理人
主权项
地址
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