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经营范围
发明名称
Reconditioning old books and ledgers
摘要
申请公布号
US2121800(A)
申请公布日期
1938.06.28
申请号
US19360068953
申请日期
1936.03.14
申请人
HULTMAN MAYNARD R
发明人
HULTMAN MAYNARD R.
分类号
B42C17/00
主分类号
B42C17/00
代理机构
代理人
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地址
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