Improvements in kinematograph film spools,申请号GB19420010748-传众专利搜索

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发明名称	Improvements in kinematograph film spools
摘要
申请公布号	GB558306(A)	申请公布日期	1943.12.30
申请号	GB19420010748	申请日期	1942.07.31
申请人	ROBERT RIGBY LIMITED;PHILLIP RIGBY;ERNEST CHARLES SEAGER	发明人
分类号	G03B21/32	主分类号	G03B21/32
代理机构		代理人
主权项
地址

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