Method for forming flat spiral glass tubing,申请号US19460685799-传众专利搜索

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发明名称	Method for forming flat spiral glass tubing
摘要
申请公布号	US2504426(A)	申请公布日期	1950.04.18
申请号	US19460685799	申请日期	1946.07.24
申请人	KEYZER ALBERT J	发明人	KEYZER ALBERT J.
分类号	C03B23/06	主分类号	C03B23/06
代理机构		代理人
主权项
地址

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