by tracing or scanning a light beam on a screen

Introduced: January 1980

Last revised: January 2006

Full Title

Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes > by tracing or scanning a light beam on a screen

Classification Context

Section:: PHYSICS
Class:: EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
Subclass:: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION