US PATENT SUBCLASS 345 / 182
.~ Light pen for fluid matrix display panel

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

156  DF  DISPLAY PERIPHERAL INTERFACE INPUT DEVICE {8}
182.~ Light pen for fluid matrix display panel

DEFINITION

Classification: 345/182

Light pen for fluid matrix display panel:

(under subclass 156) Subject matter wherein the operator uses a handheld light pen to input positional information data to a fluid matrix display panel.