G06F3/02- Input arrangements using manually operated switches, e.g.G06F3/01- Input arrangements or combined input and output arrangements for interaction between user and computer.G06F3/00- Input arrangements for transferring data to be processed into a form capable of being handled by the computer Output arrangements for transferring data from processing unit to output unit, e.g.210000004932 Little Fingers Anatomy 0.000 claims abstract description 16.
Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to GB8219299 priority Critical Priority to GB8219299 priority Priority to GB8236975 priority Priority to GB08236975A priority patent/GB2123754B/en Application filed by Gardner Kathleen E filed Critical Gardner Kathleen E Application granted granted Critical Publication of US4519721A publication Critical patent/US4519721A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Gardner Original Assignee Gardner Kathleen E Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US06/510,880 Inventor Kathleen E.
TYPEWRITER KEYBOARD KEYS PDF
Google Patents Typewriter keyboard layoutĭownload PDF Info Publication number US4519721A US4519721A US06/510,880 US51088083A US4519721A US 4519721 A US4519721 A US 4519721A US 51088083 A US51088083 A US 51088083A US 4519721 A US4519721 A US 4519721A Authority US United States Prior art keywords keys letters letter allocated alphabet Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4519721A - Typewriter keyboard layout
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