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Die große Enzyklopädie des mechanischen Rechnens

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Patent:DE118215


Patent:DE 118215
Title:Rechenlehrmittel
Date:08.02.1900
Place:Harburg a. E.
Country:Germany
Person:Seidensticker, F. (P)
Company:
Internal Links:Lehrmittel
Keywords:
Link to the patent office:
(without guarantee)
 DE118215


zu Patent:DE115595