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发明名称
Lock for signature printing machines
摘要
申请公布号
US2183919(A)
申请公布日期
1939.12.19
申请号
US19370138033
申请日期
1937.04.20
申请人
THE INTERNATIONAL POSTAL SUPPLY COMPANY
发明人
PERSSON ERNST
分类号
B41K3/66;G06M1/02;G06M1/06;G06M3/12
主分类号
B41K3/66
代理机构
代理人
主权项
地址
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