Patent classifications
G
PHYSICS
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G02
OPTICS
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G02C
SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
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5/00
Constructions of non-optical parts
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G02C5/001
specially adapted for particular purposes, not otherwise provided for or not fully classifiable according to technical characteristics, e.g. therapeutic glasses
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