Liquid graphite pencil
作者： Kathleen Torrell
DOI:
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摘要: A liquid graphite pencil is presented, and more particularly a wooden that includes cartridge disposed therein. The plurality of shell portions with grooves. placed within the grooves enclosed an adhesive between portions. ball point tip connected cartridge, allowing user to release write pencil. cap eraser portions, permitting erase previously written graphite.
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