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Priority to ES227359ApriorityCriticalpatent/ES227359A1/en
Publication of ES227359A1publicationCriticalpatent/ES227359A1/en
Improvements introduced in school writing machines, characterized in that on the side frames of the chassis is arranged an ascending heel in an open angle, which takes its end topped in a circle arc and in its center a threaded hole on which are mounted separate screws. Breakwater that fit on the swing axis. (Machine-translation by Google Translate, not legally binding)
ES227359A1956-03-171956-03-17Improvements introduced in school writing machines. (Machine-translation by Google Translate, not legally binding)
ExpiredES227359A1
(en)