Legal status (The legal status 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.)
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Koelzer Joseph
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Koelzer Joseph
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Application filed by Koelzer JosephfiledCriticalKoelzer Joseph
Priority to ES3953ApriorityCriticalpatent/ES3953A1/es
Publication of ES3953A1publicationCriticalpatent/ES3953A1/es
Modificaciones introducidas en el aparato para resolver mecánicamente las operaciones del tanto por ciento o por mil llamado "Aritmocrético Palou".