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发明名称
Standard typewriter type cleaner
摘要
申请公布号
US2232680(A)
申请公布日期
1941.02.25
申请号
US19390290424
申请日期
1939.08.16
申请人
JOHN B. SMILEY
发明人
FOSTER ROBERT B.
分类号
B41J29/17
主分类号
B41J29/17
代理机构
代理人
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