Safety smoke ring,申请号US19540425112-传众专利搜索

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法人/股东/高管

发明名称	Safety smoke ring
摘要
申请公布号	US2767718(A)	申请公布日期	1956.10.23
申请号	US19540425112	申请日期	1954.04.23
申请人	HEDRICK FRANK G	发明人	HEDRICK FRANK G.
分类号	A24F13/22	主分类号	A24F13/22
代理机构		代理人
主权项
地址

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