Bulletin board
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United States of America Patent
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Aug 15, 2017
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N/A
app pub date -
May 21, 2014
filing date -
May 21, 2013
priority date (Note) -
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Abstract
A bulletin board includes a board having at least three layers of material, in which a first layer of material has a density of 20-50 kg/m3, a second layer of material has a density of 140-170 kg/m3 and a third layer of material has a density of 20-50 kg/m3. The bulletin board has a front surface and a rear surface with an adhesive layer attached to the rear surface of the board, in which the adhesive layer enables the bulletin board to be attached to a support surface.
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