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发明名称
Improvements in or relating to gas shut-off valves
摘要
申请公布号
GB809536(A)
申请公布日期
1959.02.25
申请号
GB19550013710
申请日期
1955.05.12
申请人
SPERRYN AND COMPANY LIMITED
发明人
NORWOOD HAROLD
分类号
F16K17/164
主分类号
F16K17/164
代理机构
代理人
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