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发明名称
Typewriter impression control
摘要
申请公布号
US3224547(A)
申请公布日期
1965.12.21
申请号
US19630255963
申请日期
1963.02.04
申请人
BETZLER RICHARD F
发明人
BETZLER RICHARD F.
分类号
B41J7/24
主分类号
B41J7/24
代理机构
代理人
主权项
地址
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