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Patent:GB481801


Patent:GB 481801
Title:Improvements in and relating to adding machines having multiple-zero keys
Date:14.03.1938
Place:
Country:Great Britain
Person:
Company:Underwood (P) Elliott Fisher (P) Co
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB481801


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Aus der Patentschrift GB481801