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发明名称
Memorandum device
摘要
申请公布号
US2566989(A)
申请公布日期
1951.09.04
申请号
US19500146328
申请日期
1950.02.25
申请人
HARVEY LATHROP
发明人
LATHROP HARVEY
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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