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发明名称
Einrichtung zur Vermehrung der Sitzplätze in Zuschauerräumen, insbesondere Theatern.
摘要
申请公布号
AT126011(B)
申请公布日期
1931.12.28
申请号
ATD126011
申请日期
1931.02.09
申请人
WAAGNER-BIRO A. G.
发明人
分类号
主分类号
代理机构
代理人
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