DIFF Subgroup
G09F 13/44 with gas as lighting source
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Illuminated signs; Luminous advertising > with gas as lighting source
CPC:
Illuminated signs; Luminous advertising (G09F9/00, G09F11/00 take precedence; control of displays in general using static means to present variable information G09G) > with gas as lighting source
No child classifications to compare. This is a leaf node in both IPC and CPC.