Dry pipe exhauster,申请号US19310529598-传众专利搜索

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发明名称	Dry pipe exhauster
摘要
申请公布号	US1861777(A)	申请公布日期	1932.06.07
申请号	US19310529598	申请日期	1931.04.13
申请人	ROCKWOOD SPRINKLER COMPANY OF MASSACHUSETTS	发明人	BENSON EMIL M.
分类号	A62C35/64	主分类号	A62C35/64
代理机构		代理人
主权项
地址

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