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经营范围
发明名称
Exhaust machine
摘要
申请公布号
US2673784(A)
申请公布日期
1954.03.30
申请号
US19470723786
申请日期
1947.01.23
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
SNYDER WILLIAM S.
分类号
H01J9/38
主分类号
H01J9/38
代理机构
代理人
主权项
地址
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