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发明名称
Improvements relating to letter filing mechanisms
摘要
申请公布号
GB729027(A)
申请公布日期
1955.04.27
申请号
GB19530032423
申请日期
1953.11.23
申请人
ALFRED SOENNECKEN
发明人
分类号
B42F13/24;B42F13/26;G05G7/00;G05G11/00
主分类号
B42F13/24
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