Automatic draft controlling apparatus,申请号US19420433666-传众专利搜索

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发明名称	Automatic draft controlling apparatus
摘要
申请公布号	US2333953(A)	申请公布日期	1943.11.09
申请号	US19420433666	申请日期	1942.03.06
申请人	RIVERS CALVIN B	发明人	RIVERS CALVIN B.
分类号	F23N3/04	主分类号	F23N3/04
代理机构		代理人
主权项
地址

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