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发明名称
Improvements in and relating to rolling valves for air-controlled instruments
摘要
申请公布号
GB496418(A)
申请公布日期
1938.11.30
申请号
GB19370020339
申请日期
1937.07.22
申请人
DOUGLAS GEORGE KING MOSS;HAROLD CLAUDE PEIRCE
发明人
分类号
G01C19/30
主分类号
G01C19/30
代理机构
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