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发明名称
Schreibrechenmaschine
摘要
申请公布号
DE522313(C)
申请公布日期
1931.04.08
申请号
DE1927R078045D
申请日期
1927.05.28
申请人
ROYAL TYPEWRITER COMPANY, INC.
发明人
分类号
主分类号
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