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Patent:GB190919550


Patent:GB 190919550
Title:Improvements in Calculating Machines, especially Designed for use in connection with Typewriting Machines
Date:25.08.1910
Place:
Country:Great Britain
Person:Fairweather, Wallace (P)
Company:
Internal Links:
Keywords:
Link to the patent office:
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 GB190919550


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Aus der Patentschrift GB190919550