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发明名称
Improvements in blocks for use in the construction of chimneys, conduits and other structures
摘要
申请公布号
GB690935(A)
申请公布日期
1953.04.29
申请号
GB19500010031
申请日期
1950.04.24
申请人
FRANK GEORGE SAUNDERS
发明人
分类号
E04F17/00
主分类号
E04F17/00
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代理人
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