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Patent:GB472777


Patent:GB 472777
Title:Improvements in adding machines of the ten-key type
Date:30.09.1937
Place:
Country:Great Britain
Person:
Company:Underwood (P) Elliott Fisher (P) Co
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB472777


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Aus der Patentschrift GB472777