Composite resinous sheet of birefringent material and method of making the same,申请号US19450587685-传众专利搜索

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发明名称	Composite resinous sheet of birefringent material and method of making the same
摘要
申请公布号	US2447805(A)	申请公布日期	1948.08.24
申请号	US19450587685	申请日期	1945.04.11
申请人	POLAROID CORPORATION	发明人	JR. MARK HYMAN,
分类号	C03C17/32;G02B5/30	主分类号	C03C17/32
代理机构		代理人
主权项
地址

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