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发明名称
TREATMENT OF ELECTRIC LAMP ENVELOPES
摘要
申请公布号
CA497246(A)
申请公布日期
1953.10.27
申请号
CAD497246
申请日期
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
ARTHUR J. SHARKEY
分类号
主分类号
代理机构
代理人
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