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Patent:GB686178


Patent:GB 686178
Title:Improvements in or relating to calculating machines
Date:21.01.1953
Place:
Country:Great Britain
Person:Harold Hall Keen
Company:British Tabulating (P) Mach Co Ltd
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 GB686178


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Aus der Patentschrift GB686178