73728914
May 17, 1988
Jun 26, 1990
CHEMICAL, MINERAL, VEGETABLE, PLASTIC AND CERAMIC INGREDIENTS FOR USE IN THE MANUFACTURE OF FILTERS AND FILTERING UNITS FOR CLEANING AND CONDITIONING OF AIR AND FOR INFLUENCING OTHER CLIMATOLOGICAL CONDITIONS IN CLOSED ROOMS
ChemicalsFILTERING UNITS FOR CLEANING AND CONDITIONING OF AIR AND FOR INFLUENCING FURTHER CLIMATOLOGICAL CONDITIONS IN CLOSED ROOMS
Environmental Control Apparatus