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发明名称
Noiseless typewriter
摘要
申请公布号
US2153720(A)
申请公布日期
1939.04.11
申请号
US19360090602
申请日期
1936.07.14
申请人
THE FIRM ING. C. OLIVETTI & C.
发明人
LEVI RICCARDO
分类号
B41J7/02
主分类号
B41J7/02
代理机构
代理人
主权项
地址
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