SU1509935A1
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Device for digital filtration with automatic amplification control
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Display device
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Device for determining integral part of number logarithms
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Device for exrtacting n-th root
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Device for calculating difference of two squared numbers
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Device for taking logarithms
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Die forging method
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Method of simultaneous upsetting of works
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Method of making forgings with indentations
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Press for assembling by press-fitting
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Method of producing non-round in plan forgings
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SU574477A1
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Method of strengthening die sets
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