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经营范围
发明名称
Improvements in and relating to reducing or regulating valves
摘要
申请公布号
GB477003(A)
申请公布日期
1937.12.20
申请号
GB19360016994
申请日期
1936.06.18
申请人
SAN PAULO GAS COMPANY LIMITED;GEORGES EDOUARD SEYLAZ
发明人
分类号
G05D23/12
主分类号
G05D23/12
代理机构
代理人
主权项
地址
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