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Die große Enzyklopädie des mechanischen Rechnens

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Patent:SE142495


Patent:SE 142495
Title:Räknemaskin
Date:12.07.1941
Place:Oaklakd, CA
Country:Sweden
Person:Ellerbeck, Grant Clawson (P)
Company:Marchant (P) Calculating Machine Comp.
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 SE142495


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Aus der Patentschrift SE142495