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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB1393502


Patent:GB 1393502
Title:Improvements in or relating to calculators
Date:07.05.1975
Place:Vaduz
Country:Great Britain
Person:
Company:Ets. Fresa
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB1393502


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