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发明名称
Line spacing device for adding and computing machines
摘要
申请公布号
US3217855(A)
申请公布日期
1965.11.16
申请号
US19620173499
申请日期
1962.02.15
申请人
WALTHER-BUROMASCHINEN G.M.B.H.
发明人
HABERKORN OTTO;ROTH OTTO
分类号
B41J19/86;B41J29/18
主分类号
B41J19/86
代理机构
代理人
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