9 ELECTRICAL APPARATUS-NAMELY, ROTARY AND RECTILINEAR VARIABLE RESISTORS, FIXED RESISTORS, POTENTIOMETERS, THERMISTORS AND DRY CELL BATTERIES
17 PLASTIC-TYPE MATERIALS IN THE FORM OF SHEETS, BLOCKS AND SHAPED PIECES, SUCH AS BARS AND DISCS, MADE WHOLLY OR IN PART FROM ELECTRICALLY CONDUCTIVE PLASTICS FOR USE AS ELECTRIC RESISTIVE DEVICES