Sun-tracking system comprising of a solar-powered mechanism for sensing the position of the sun, automatically tracking the sun

Sun-tracking system comprising of a solar-powered mechanism for sensing the position of the sun, automatically tracking the sun

Posterboard; Art pictures in the nature of paintings; Art pictures in the nature of printed photographs; Art prints on canvas; Drawing boards being painters' articles; Drawing materials for blackboards; Framed art pictures; Framed paintings; Graphic art prints; Mounted printed posters; Poster board; Printed advertising posters; Printed art reproductions; Printed posters; Unmounted printed posters; Watercolor pictures; Watercolour paintings; Watercolour pictures