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Patent:GB1299744


Patent:GB 1299744
Title:An adding, subtracting and totaling calculator
Date:13.12.1972
Place:Tokyo
Country:Great Britain
Person:Oba, Harutaro; Sawazu, Toshihiko; Takeuchi, Sugio; Chikata, Masaru
Company:Tokyo Electric Comp. Ltd.
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 GB1299744


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