DIFF Subgroup
G09F 13/18 Edge-illuminated signs
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Illuminated signs; Luminous advertising > Edge-illuminated signs
CPC:
Illuminated signs; Luminous advertising (G09F9/00, G09F11/00 take precedence; control of displays in general using static means to present variable information G09G) > Edge-illuminated signs
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.
Child Classifications
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