Process for the preparation of a special product intended to delete or obliterate inscriptions or drawings in black or red ink from tracing cloth, without leaving any trace thereon

摘要

369,828. Ink-erasers. GILABERT, J. M., 1, Plaza de Fontes, Murcia, Spain. July 7, 1931, No. 19564. [Class 146 (iii).] A paste for removing ink marks from tracing cloth without leaving any trace, such as roughening of the surface, consists of pumice powder, virgin wax, essence of turpentine, and petroleum jelly.