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发明名称
Improvements in signs or indications
摘要
申请公布号
GB353155(A)
申请公布日期
1931.07.23
申请号
GB19300016101
申请日期
1930.05.26
申请人
WILLIAM JOSEPH MANNING;ROBERT JAMES DOUGHTIE HERRIES
发明人
分类号
G09F7/22
主分类号
G09F7/22
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