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经营范围
发明名称
Telescopic standard or arm
摘要
申请公布号
GB657777(A)
申请公布日期
1951.09.26
申请号
GB19480019721
申请日期
1948.07.23
申请人
FRANTS HEINRICH MAACK
发明人
分类号
F21V21/22
主分类号
F21V21/22
代理机构
代理人
主权项
地址
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