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发明名称
Process for making stems
摘要
申请公布号
US2817927(A)
申请公布日期
1957.12.31
申请号
US19560572129
申请日期
1956.03.16
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
COWLEY CLAYTON R.
分类号
C03B23/043;C03B23/09;H01J5/32
主分类号
C03B23/043
代理机构
代理人
主权项
地址
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