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Patent:GB678299


Patent:GB 678299
Title:Improvements in or relating to calculating machines
Date:03.09.1952
Place:
Country:Great Britain
Person:Albert John Keen
Company:British Tabulating (P) Mach Co Ltd
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB678299


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Aus der Patentschrift GB678299