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发明名称
Federzungenweiche.
摘要
申请公布号
CH212772(A)
申请公布日期
1940.12.15
申请号
CHD212772
申请日期
1940.08.12
申请人
NEUWEILER,ARNOLD
发明人
NEUWEILER,ARNOLD
分类号
E01B7/06
主分类号
E01B7/06
代理机构
代理人
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地址
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