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发明名称
Typewriter eraser
摘要
申请公布号
US2132906(A)
申请公布日期
1938.10.11
申请号
US19380195373
申请日期
1938.03.11
申请人
SCHNABEL FREDERICK C
发明人
SCHNABEL FREDERICK C.
分类号
B41J11/60
主分类号
B41J11/60
代理机构
代理人
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地址
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