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发明名称
Strengthening or reinforcing chimney shafts
摘要
申请公布号
GB329496(A)
申请公布日期
1930.05.22
申请号
GB19290014224
申请日期
1929.05.07
申请人
HEINRICH PFERDMENGES
发明人
分类号
E04H12/28
主分类号
E04H12/28
代理机构
代理人
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