Four seasons cool and hot water mat

The present invention relates to a four-season cold and hot water mat and, more specifically, to a four-season cold and hot water mat, wherein an inner portion of a hose is divided into a space for filling water and a space for arranging hot wires. Moreover, a direct current power source is used as...

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Bibliographische Detailangaben
1. Verfasser: SHIN YOUNG JONG
Format: Patent
Sprache:eng ; kor
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