Fireplace draft mechanism,申请号US19520323000-传众专利搜索

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发明名称	Fireplace draft mechanism
摘要
申请公布号	US2740398(A)	申请公布日期	1956.04.03
申请号	US19520323000	申请日期	1952.11.28
申请人	COLLINS LAWRENCE W	发明人	COLLINS LAWRENCE W.
分类号	F24B1/189	主分类号	F24B1/189
代理机构		代理人
主权项
地址

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