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发明名称
Wangentreppe.
摘要
申请公布号
CH146464(A)
申请公布日期
1931.04.30
申请号
CHD146464
申请日期
1930.05.17
申请人
HARTMANN,AUGUST
发明人
HARTMANN,AUGUST
分类号
E04F11/025
主分类号
E04F11/025
代理机构
代理人
主权项
地址
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