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Patent:GB316663


Patent:GB 316663
Title:Improvements in or relating to perforated cards for use in calculating statistical or similar machines
Date:03.04.1930
Place:
Country:Great Britain
Person:
Company:Siemens (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB316663


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Aus der Patentschrift GB316663