… around a disc of paperboard, metal, plastics, etc., with a centre hole and notches, for insertion in a suitable designed stereoscope, the scenes being changed by rotating the disc. Application of …
… 1. Heat-insulating material, of flock-like appearance, used, e.g., in attics (lofts) or wall cavities … shredded newspapers or other waste paper or paperboard, reduced to small particles by grinding, then fireproofed by …
… 1. Distance Measuring Equipment (DME) designed to be used as … system, enabling the aircraft in flight to measure its distance from a ground-based beacon by radio-electrical and …
… chloride (at least 95 %) with small quantities of added trace-elements of a kind found in certain natural forms of salt (such as magnesium, copper, …
… 1. Concentrate of anti-freezing fluid consisting essentially of … ethyl alcohol and water mixed with small amounts of anionic surface-active agent, methyl ethyl ketone, colouring matter …
