MAGNETIC ERASER, WRITING SYSTEM AND DISPLAY DEVICE
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United States of America Patent
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Issued Date -
Oct 7, 2021
app pub date -
Oct 29, 2019
filing date -
Nov 1, 2018
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Abstract
A magnetic eraser can be used for erasing markings drawn on a magnetic sheet. The magnetic eraser includes a housing with a magnet placed in the housing. The magnetic eraser also includes a first magnetic body placed between a first surface of the housing and the magnet. The first surface of the housing can provide a first erasing surface.
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