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rollstick_electrical energy supply for Sahel region in Africa consists of an aluminium stick and a wheel. wheel is a placeholder for batteries and dynamo. stick with LED lights insert at the end is a source of light and can be charged from the wheel's battery. |
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© copyrights 2007 by katarzyna bazylczyk. all rights reserved.
all material published remains the exclusive copyright 2007 by katarzyna bazylczyk. no contents may be reproduced in whole or in part without the written consent of katarzyna bazylczyk. |
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