IMPERVALL
COVERING MATERIAL FOR WIRE, CABLE, AND ELECTRICAL CONDUCTORS INCLUDING ELECTRICAL INSULATION, JACKETS, AND PROTECTIVE MATERIAL FORMED OF THERMOPLASTIC OR THERMO-SETTING PLASTIC COMPOSITIONS, AND WIRE, CABLE, AND ELECTRICAL CONDUCTORS TO WHICH SUCH INSULATION, JACKETS, OR PROTECTIVE MATERIAL IS APPLIED
Expired · October 31, 1962 · 72156277 ·