Logarithm board toy

The utility model provides a logarithm board toy, including logarithm board, a plurality of digital block and a plurality of block, wherein, a plurality of stands of logarithm board upper end fixedly connected with, the digital block basis figure quantity in the figure group is located logarithm boa...

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Bibliographische Detailangaben
1. Verfasser: LIN FUGEN
Format: Patent
Sprache:chi ; eng
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