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发明名称
Austauschboden für Kolonnen
摘要
申请公布号
DD67402(A1)
申请公布日期
1969.06.20
申请号
DD19680131378
申请日期
1968.04.09
申请人
发明人
BALLEYER WINFRIED;KUNZMANN BERND;RESCHKE GUENTER
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