Patent classifications
G
PHYSICS
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G09
EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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G09F
DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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13/00
Illuminated signs; Luminous advertising
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G09F13/04
Signs, boards or panels, illuminated from behind the insignia
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G09F13/0418
Constructional details
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G09F13/0468
Signs, boards or panels with tensioned or flexible display surface
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