Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Apparatus for recording, transmission or reproduction of sound and images; Blank magnetic tapes for tape recorders; Blank optical data carriers; Cinematographic machines and apparatus; Educational apparatus, namely, a transparent tank used as a teaching aid for the chemical process of making alternative fuels; Electronic automatic coin dispensers; Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; Fire extinguishing apparatus; Life-saving rafts; Mechanisms for coin operated apparatus; Nautical and photographic apparatus and instruments, namely, underwater housings for cameras, underwater enclosures for cameras and underwater enclosures for photographic lenses; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Optical character recognition (OCR) apparatus; Photographic cameras; Scientific apparatus and instruments, namely, chromatography columns for use in purification in the laboratory and parts and fittings therefor; Signal processors; Surveying instruments; Surveying machines and instruments; Technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids; Weighing apparatus and instruments