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Patent:GB488754


Patent:GB 488754
Title:Mechanical toy imitating a calculating animal
Date:13.07.1938
Place:
Country:Great Britain
Person:Arnold, Carl (P)
Company:
Internal Links:Lehrmittel
Keywords:
Link to the patent office:
(without guarantee)
 GB488754


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Aus der Patentschrift GB488754

"A toy in the form of a horse or other figure indicates the answer to an arithmetical problem by repeatedly raising and lowering a limb in accordance with a setting of mechanism in the toy to the answer it is required to indicate." (Aus der Patentschrift)