Exhaust pipe ventilation equipment, namely, exhaust vent hoses, exhaust pipe nozzles, and adapter pipes for automotive exhausts, all of the foregoing being specially adapted for use with automotive exhaust pipes

Exhaust pipe ventilation equipment in the nature of hoses, nozzles and adapters for land vehicles

DUCTS AND CONNECTING HOSE ASSEMBLY FOR WITHDRAWING DIRECTLY TO ATMOSPHERE THE EXHAUST GASES FROM AUTOMOBILES IN SERVICE GARAGES