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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
optical components, namely optical filters, using retarder stack technology to control and correct color by selectively rotating the state of polarization of the undesirable color wavelengths, primarily for use in direct view display, vision, and photographic systems, namely avionic displays, night vision systems, eyewear, and photographic imaging