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经营范围
发明名称
Procédé et appareil pour fabriquer les tubes ou barres de verre par étirage
摘要
申请公布号
FR705335(A)
申请公布日期
1931.06.04
申请号
FRD705335
申请日期
1930.11.10
申请人
PATENT-TREUHAND-GESELLSCHAFT FUR ELECTRISCHE GLUHLAMPEN M.B.H.
发明人
分类号
C03B17/04
主分类号
C03B17/04
代理机构
代理人
主权项
地址
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