Improvements in or relating to the silencing of air and other gaseous currents in ducts and tunnels,申请号GB19430009234-传众专利搜索

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发明名称	Improvements in or relating to the silencing of air and other gaseous currents in ducts and tunnels
摘要
申请公布号	GB566775(A)	申请公布日期	1945.01.12
申请号	GB19430009234	申请日期	1943.06.09
申请人	ROBERT WILLIAM STANTON	发明人
分类号	E21F1/04	主分类号	E21F1/04
代理机构		代理人
主权项
地址

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