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发明名称
Improvements in book-keeping systems
摘要
申请公布号
GB473566(A)
申请公布日期
1937.10.15
申请号
GB19360014202
申请日期
1936.05.19
申请人
LARS JONAS WERNER ULLHOLM
发明人
分类号
B42F5/00
主分类号
B42F5/00
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