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jan 7, 1984 - After testing 5127 prototypes, James Dyson had finally perfected his invention of Dual Cyclone Technology.

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After testing 5127 prototypes, James Dyson had finally perfected his invention of Dual Cyclone Technology.

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Dyson History

Bykarim farahat
5 Nov 2018
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8761

Date:

jan 7, 1984
Now
~ 41 years ago
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