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经营范围
发明名称
Improvements in and relating to memorandum devices
摘要
申请公布号
GB803285(A)
申请公布日期
1958.10.22
申请号
GB19560037089
申请日期
1956.12.04
申请人
FRANCIS GREIF
发明人
分类号
B42D19/00
主分类号
B42D19/00
代理机构
代理人
主权项
地址
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