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Convenient key-free password door lock method
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CN101963018A
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High-processibility electronic password lock method
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CN101963016A
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Electronic code lock with good safety
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CN101964146A
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Traffic light auxiliary system
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CN101964147A
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Traffic light assisting method capable of conveniently acquiring traffic jam information of crossroad
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CN101944268A
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Anti-tear off method for library books
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CN101944263A
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Barcode page-tearing preventing method for books in libraries
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CN101940836A
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Design method of body-building toy target targeting at circles
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CN101940838A
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Design method of dart-loop body-building toy
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CN101940837A
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Method for designing body-building device with variable dart ring size
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CN101943711A
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Charging method for energy-saving lamp based on wireless remote meter reading
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CN101943627A
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Air bubble detecting method of blades of wind turbine generator resisting external light influence
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