United States Patent Office
Documentos enviados por la Oficina de patetentes de Estados Unidos. Incluye varios inventos similares al Convertidor Gráfico-Analógico para ser comparados.
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| Main Author: | von Reichenbach, Fernando |
|---|---|
| Published: |
1968
|
| Online Access: | http://archivofvr.unq.edu.ar/united-states-patent-office |
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