Safety apparatus for steam boilers,申请号US19520290028-传众专利搜索

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发明名称	Safety apparatus for steam boilers
摘要
申请公布号	US2739576(A)	申请公布日期	1956.03.27
申请号	US19520290028	申请日期	1952.05.26
申请人	NATIONAL RESEARCH DEVELOPMENT CORPORATION	发明人	RICARDO HARRY RALPH
分类号	F22B37/42;G01F23/32	主分类号	F22B37/42
代理机构		代理人
主权项
地址

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