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Patent:US2822981


Patent:US 2822981
Title:Reciprocal Computing Mechanism
Date:11.02.1958
Place:
Country:USA
Person:Grip, Erik Konrad (P) et al
Company:Facit (P)
Internal Links:
Keywords:
Link to the patent office:
(without guarantee)
 US2822981 (espacenet),  US2822981 (uspto)


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