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Die große Enzyklopädie des mechanischen Rechnens

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Patent:GB838237


Patent:GB 838237
Title:An instrument for measuring areas
Date:22.06.1960
Place:
Country:Great Britain
Person:
Company:Adegboye Akinwunmi
Internal Links:Planimeter
Keywords:
Link to the patent office:
(without guarantee)
 GB838237


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Aus der Patentschrift GB838237