73294024
Jan 22, 1981
Jun 28, 1983
Visual Display Kits and Parts Thereof-Namely, Visual Display Erasable Marking Pens for Use Only on Impermeable Writing Surfaces, Visual Duplicating Impermeable Writing Surfaces Manufactured of Polyester Melamine, Porcelain or Vinyl; Chemical Solvent for Removing Marking from the Aforesaid Impermeable Surface
Paper Goods and Printed Matter