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发明名称
Improvements in or relating to roller blind and like indicators
摘要
申请公布号
GB636797(A)
申请公布日期
1950.05.03
申请号
GB19480014781
申请日期
1948.06.01
申请人
G. H. PATENTS LIMITED;THOMAS KEIGHTLEY
发明人
分类号
G01C22/00
主分类号
G01C22/00
代理机构
代理人
主权项
地址
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