73227395
Jul 20, 1979
Jun 16, 1981
Tubes, Tubing, Ducts and Ducting for Use in Air-Conditioning, Warm-Air Heating and Exhaust Systems, as Well as and Parts Thereof and Fittings Therefor
Environmental Control ApparatusSeals of Rubber and/or Plastic Materials for Use in Air-Conditioning, Warm-Air, Heating and Exhaust Systems
Rubber Goods