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经营范围
发明名称
Glass tube baking apparatus
摘要
申请公布号
GB633171(A)
申请公布日期
1949.12.12
申请号
GB19470021695
申请日期
1947.08.07
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
分类号
C03B29/06
主分类号
C03B29/06
代理机构
代理人
主权项
地址
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