WINDOW-CLEANING APPARATUS, AND METHOD FOR CONTROLLING THE MOVEMENT THEREOF
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United States of America Patent
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Issued Date -
Mar 7, 2013
app pub date -
May 13, 2011
filing date -
May 15, 2010
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Abandoned
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Abstract
A window cleaning apparatus includes a first cleaning unit and a second cleaning unit that is attached to both sides of a window, respectively, by a magnetic force and moved on the sides, and a method of controlling a movement of the window cleaning apparatus. The method includes detecting the first initial attachment position of the window cleaning apparatus and moving the window cleaning apparatus close to the detected initial attachment position after cleaning.
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