F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
Landscapes
Engineering & Computer Science
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General Engineering & Computer Science
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Developing Agents For Electrophotography
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Diaphragms For Electromechanical Transducers
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Financial Or Insurance-Related Operations Such As Payment And Settlement
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