Hand-warming pen with electric heating layer
The utility model relates to a hand-warming pen with an electric heating layer, and belongs to the field of articles for daily use. The hand-warming pen with the electric heating layer comprises a pen core, a pen point, a pen cap, a pen tail cover and a pen core tube. A button-type battery is arrang...
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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