Semi-automatic pushbutton device for allowing the use of typewriter keyboards and computer keyboards by persons who have difficulty in using their upper limbs,申请号IT19900018131-传众专利搜索

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发明名称	Semi-automatic pushbutton device for allowing the use of typewriter keyboards and computer keyboards by persons who have difficulty in using their upper limbs
摘要
申请公布号	IT1246913(B)	申请公布日期	1994.11.28
申请号	IT19900018131	申请日期	1990.12.31
申请人	MARTINELLI ADRIANO	发明人	MARTINELLI ADRIANO
分类号	B41J;(IPC1-7):B41J	主分类号	B41J
代理机构		代理人
主权项
地址

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