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PCE
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DIFF Subgroup
G09F 13/36

co-operating with rotating screening means

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Illuminated signs; Luminous advertising > with light sources co-operating with movable members, e.g. with shutters to cover or uncover the light source > co-operating with rotating screening means

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 light sources co-operating with movable members, e.g. with shutters to cover or uncover the light source (apparatus wherein advertising or display material is moved in a continuous or intermittent succession G09F11/00; construction or details of lighting devices F21V11/00) > co-operating with rotating screening means

No child classifications to compare. This is a leaf node in both IPC and CPC.