Progressive addition spectacle lens
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United States of America Patent
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-
Jun 23, 1992
Issued Date -
N/A
app pub date -
Feb 21, 1989
filing date -
Dec 19, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lenses are presented in occupational, dynamic activity and general purpose configurations, len lenses all being of compatible polar or bipolar progressive power design to form a series of progressive power lenses.
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Cited Art Landscape
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