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Die große Enzyklopädie des mechanischen Rechnens

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Patent:US2847164


Patent:US 2847164
Title:Value Approximation Mechanism
Date:12.08.1958
Place:
Country:USA
Person:Ellerbeck, Grant Clawson (P)
Company:Friden (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2847164 (espacenet),  US2847164 (uspto)


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