Multifocal spectacle lens
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United States of America Patent
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Apr 4, 2006
Grant Date -
Jan 15, 2004
app pub date -
Jul 9, 2003
filing date -
Jul 10, 2002
priority date (Note) -
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Abstract
There is provided a multifocal spectacle lens having a front surface and a back surface each of the front surface and the back surface is formed as a multifocal surface or a progressive-power surface, distributions of surface power of the front surface and the back surface being different from each other.
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