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Patent:US3384301


Patent:US 3384301
Title:Plus and minus accumulator
Date:21.05.1968
Place:Oronoco und Rochester, Minn. und Rochester, Minn. und Armonk
Country:USA
Person:John W. Berkman Charles G. De Serre Thomas L. Johnson
Company:Internal Business Machines Corp.
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Keywords:
Link to the patent office:
(without guarantee)
 US3384301 (espacenet),  US3384301 (uspto)


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