Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B44
DECORATIVE ARTS
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B44F
SPECIAL DESIGNS OR PICTURES
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1/00
Designs or pictures characterised by special or unusual light effects
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B44F1/02
produced by reflected light, e.g. matt surfaces, lustrous surfaces
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B44F1/04
after passage through surface layers, e.g. pictures with mirrors on the back
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B44F1/045
having mirrors or metallic or reflective layers at the back side
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