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发明名称
Stamp canceling machine
摘要
申请公布号
US1914502(A)
申请公布日期
1933.06.20
申请号
US19290415934
申请日期
1929.12.23
申请人
MONTGOMERY WARD & CO., INCORPORATED
发明人
HEATON NATHAN C.
分类号
B41K3/12;B41K3/44
主分类号
B41K3/12
代理机构
代理人
主权项
地址
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