8-digit calculator powered by water, Fill water battery compartment with H2O and never use a conventional battery again! US PATENT #US 7,011,906 UTILITY. All components of the H2O battery are recyclable! ...more
Showing posts with label calculator. Show all posts
Showing posts with label calculator. Show all posts
Friday, February 08, 2008
Water Power Calculator
8-digit calculator powered by water, Fill water battery compartment with H2O and never use a conventional battery again! US PATENT #US 7,011,906 UTILITY. All components of the H2O battery are recyclable! ...more
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