Invention Application
US20050175390A1 Erasable writing system 审中-公开
可擦写书写系统

Erasable writing system
Abstract:
A system including a writing instrument having a body with a marking portion and an eraser portion, wherein the marking portion is configured to dispense a permanent ink and the eraser portion is configured to dispense a solvent which solubilizes the permanent ink and a writing surface upon which the marking portion can dispense the permanent ink, wherein the writing surface is part of a school or office product.
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