229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1.
238000006011 modification reaction Methods 0.000 description 1.A key on a computer keyboard that provides a short way of performing a set of actions. The keys near the top of a keyboard marked ‘F1’ to ‘F12’ are function keys. 241001067407 Cometes Species 0.000 description 1 A special button on a computer keyboard that is used for a particular operation in a program.230000000875 corresponding Effects 0.000 claims description 20.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 FR7007390A priority Critical patent/FR2082059A5/fr Application filed by I Frost filed Critical I Frost Application granted granted Critical Publication of US3712444A publication Critical patent/US3712444A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US00120239A Inventor I Frost Original Assignee I Frost Priority date (The priority date is an assumption and is not a legal conclusion.
#Typewriter keyboard keys pdf#
Google Patents Arrangement of keys of keyboard, especially for typewriterĭownload PDF Info Publication number US3712444A US3712444A US00120239A US3712444DA US3712444A US 3712444 A US3712444 A US 3712444A US 00120239 A US00120239 A US 00120239A US 3712444D A US3712444D A US 3712444DA US 3712444 A US3712444 A US 3712444A Authority US United States Prior art keywords letters signs keys keyboard upper case Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US3712444A - Arrangement of keys of keyboard, especially for typewriter US3712444A - Arrangement of keys of keyboard, especially for typewriter
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