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发明名称
Dispositif d'une nouvelle marche d'escalier et toutes applications similaires
摘要
申请公布号
FR760791(A)
申请公布日期
1934.03.02
申请号
FRD760791
申请日期
1932.12.28
申请人
发明人
SOURIAU JEAN
分类号
E04F11/09;E04F11/116;E04F11/16;F24D5/10
主分类号
E04F11/09
代理机构
代理人
主权项
地址
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