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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3/00
Special supporting arrangements for lens assemblies or monocles
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G02C3/003
Arrangements for fitting and securing to the head in the position of use
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