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A 1940's car assembly line
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brand new car from 1949
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coal a common type of energy
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a cow
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the hammerhead crane
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a 1940's telephone
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A vicks sign
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A modern cell phone for the time
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a construction vehicle
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The cad-cam system was developed in 1999
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a wind turbine
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a hand transplant
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a soil penetrometer form measuring soil compaction
