ARC SEC

X-ray optical devices, namely, x-ray reflectors, x-ray lenses, x-ray diffractors, x-ray multilayer reflection and defraction surfaces, x-ray crystal reflection and defraction surfaces, and x-ray analysers, x-ray sources comprised of an x-ray source tube, optics, and collection optics, and kirkpatrick-baez lens system comprised of two or more multilayer reflecting lens elements not for medical use