लिफ्ट का

लिफ्ट का आविष्कार किसी एक व्यक्ति ने एक दिन में नहीं किया

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ये धीरे धीरे विकसित होती गई

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रोमन काल में लिफ्ट जैसी मशीन का आविष्कार हुआ

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रोम के इंजीनियर वित्रूवियस पोलियो ने ईसा पूर्व में घिरनियों का इस्तेमाल वजन उठाने के लिए हुआ

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घिरनियों को खींचने का काम आदमी से किया जाता था

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बाद में 1800 ईंस्वी में भाप से चलाया जाता था

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1852 में एलिशा ग्रेव्स ओटिस ने लिफ्ट में सुरक्षा यंत्र लगाए

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पहली यात्री लिफ्ट- 1857 में न्यूयार्क सिटी हावूट डिपार्टमेंटल स्टोर में चालू हुई

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एक मिनट से कम समय समय में 05 मंजिलें चढ़ जाती थी

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लिफ्ट में सबसे अहम बदलाव 1889 में शुरू हुआ जबकि इसमें पुश बटन का इस्तेमाल होने लगा

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ऐसी और वेबस्टोरी के लिए क्लिक करें

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लिफ्ट का

आविष्कार