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经营范围
发明名称
Siphoning apparatus
摘要
申请公布号
US2871893(A)
申请公布日期
1959.02.03
申请号
US19550501622
申请日期
1955.04.15
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
WALTS EARL F.
分类号
H01J9/22
主分类号
H01J9/22
代理机构
代理人
主权项
地址
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