Improvements in or relating to book-holding appliances,申请号GB19470007269-传众专利搜索

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发明名称	Improvements in or relating to book-holding appliances
摘要
申请公布号	GB622353(A)	申请公布日期	1949.04.29
申请号	GB19470007269	申请日期	1947.03.17
申请人	WOODLEY (AERONAUTICAL ENGINEERING COMPANY, LIMITED;JOHN HENRY KELSHAW	发明人
分类号	H04M1/21	主分类号	H04M1/21
代理机构		代理人
主权项
地址

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