from influences producing mechanical damage, e.g. caused by blast, by external objects, by person (G12B17/02 - G12B17/06 take precedence)

Full Title

Screening (insulation or other protection of buildings E04B; emergency protection of apparatus in general F16P7/00; in connection with acoustic waves G10K11/00; in connection with nuclear radiation G21F) > from influences producing mechanical damage, e.g. caused by blast, by external objects, by person (G12B17/02 - G12B17/06 take precedence)