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发明名称
Vorrichtung zur Sperrung der unter Federdruck stehenden Zahnstangen von Rechenmaschinen.
摘要
申请公布号
AT123134(B)
申请公布日期
1931.06.10
申请号
ATD123134
申请日期
1929.11.07
申请人
THE ELLIS ADDING TYPEWRITER COMPANY
发明人
分类号
主分类号
代理机构
代理人
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