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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US3522418


Patent:US 3522418
Title:Key Mechanism for Mechanical Calculators
Date:04.08.1970
Place:Villevaude, Frankreich
Country:USA
Person:Arvai, Tibor (P)
Company:Sperry Rand (P)
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Keywords:
Link to the patent office:
(without guarantee)
 US3522418 (espacenet),  US3522418 (uspto)


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Aus der Patentschrift US3522418