Steam crane 1970-01-01
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Hiroshi Tada (engineer) 1970-01-01
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Mark I Fire Control Computer 1970-01-01
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Odhner Arithmometer 1970-01-01
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Positive real numbers 1970-01-01
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Steam generator (auxiliary boiler) 1970-01-01
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Steam jet cooling 1970-01-01
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Stelzer engine 1970-01-01
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Digi-Comp II 1970-01-01
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Domino computer 1970-01-01
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Dr. Nim 1970-01-01
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Geniac 1970-01-01
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Stepped nozzle 1970-01-01
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Straight-fourteen engine 1970-01-01
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Straight-nine engine 1970-01-01
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Straight-seven engine 1970-01-01
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Straight-twelve engine 1970-01-01
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Sugarcane harvester 1970-01-01
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Sundew (dragline) 1970-01-01
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Transit bolt 1970-01-01
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