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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
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FR711779D1931-02-211931-02-21
Improvements in the making of lampshades
ExpiredFR711779A
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