MASTER SHEETS, STENCILS AND TRANSFER SHEETS, AND COMBINED MASTER AND TRANSFER SHEET UNITS FOR USE IN THERMOGRAPHICALLY IMAGING DUPLICATING SPIRIT AND OFFSET MASTERS AND STENCILS; ALSO COMBINED COPY SHEET AND TRANSFER SHEET UNITS FOR THERMOGRAPHICALLY IMAGING SINGLE COPIES AND FOR IMAGING PROJECTION TRANSPARENCIES

MASTER SHEETS, TRANSFER SHEETS, COMBINED MASTER SHEETS AND CARBON SHEETS AND CARRIERS FOR USE IN MAKING SPIRIT MASTERS THERMOGRAPHICALLY