Control arrangements or circuits, of interest only in connection with visual indicators

Official title: {using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background (slide projectors per se G03B23/00 = 42 HP)}

G09G3/001 (Control arrangements or circuits, of interest only in connection with visual indicators) appears on 5,556 US grants and 6,885 published applications in this corpus.