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发明名称
Improvements relating to access manholes provided in cylindrical tanks or the like
摘要
申请公布号
GB822011(A)
申请公布日期
1959.10.21
申请号
GB19550033600
申请日期
1955.11.23
申请人
G. A. HARVEY & CO. (LONDON) LIMITED
发明人
EATWELL HENRY THOMAS
分类号
F16J13/02
主分类号
F16J13/02
代理机构
代理人
主权项
地址
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