Improvements in or relating to portable projection screens,申请号GB19440007464-传众专利搜索

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发明名称	Improvements in or relating to portable projection screens
摘要
申请公布号	GB572129(A)	申请公布日期	1945.09.24
申请号	GB19440007464	申请日期	1944.04.21
申请人	JOHN LESLIE STABLEFORD	发明人
分类号	G03B21/58	主分类号	G03B21/58
代理机构		代理人
主权项
地址

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