Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, supervision, life-saving and teaching apparatus and instruments, namely, Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electric current switches and electric accumulators; appara...

CHEMICAL ELEMENTS MADE FROM CHLOR-ALKALI ELECTROLYSIS, NAMELY, CHLORINE, SODIUM HYDROXIDE, AND HYDROGEN; WATER-TREATMENT CHEMICALS FOR USE IN COOLING TOWERS AND BOILERS, AND FOR WASTE WATER TREATMENT; INDUSTRIALLY-PURE HYDROCHLORIC ACID, IRON (III) CHLORIDE SOLUTION, IRON (II) CHLORIDE SOLUTION, IRON (II) SULPHATE, SODIUM ALUMINATE, AND ALUMINUM CHLORIDE; DRILLING FLUIDS; CHEMICALS FOR WELL REGENERATION, NAMELY, AMIDOSULFURIC ACID, HYDROCHLORIC ACID, PHOSPHORIC ACID, CITRIC ACID, TARTARIC ACI...

FIXED, MOBILE AND SYSTEM BRIDGES AND ASSOCIATED METAL COMPONENTS; PREFABRICATED COMPONENTS FOR HANGARS AND BUILDINGS CONSISTING OF STEEL FRAMES AND PROFILE SHEET STEEL; METAL TOWERS AND MASTS; METAL COMPONENTS FOR NUCLEAR REACTORS, NAMELY SAFETY HOUSINGS, SAFETY AIR LOCKS, ARMORING, GATES, BASIN LININGS AND CONTAINERS; STEEL CONTAINERS; METAL GAS CONTAINERS FOR THE TRANSPORT OF LIQUIFIED GAS; METAL LIQUIFIED GAS STORAGE DEVICES, NAMELY FIXED, FLOATING ROOF TANKS AND REFRIGERATED CONTAINERS; A...