… or repetitive designs, etc., whether on paper, textiles, linoleum, leather or on other materials, by printing … by hand, mechanically or by acid . These may be of wood, linoleum, copper, steel, etc. (2) Lithographic stones . …
… by heating a mixture of finely ground coke (normally petroleum coke, but sometimes anthracite coke, retort coke, … of not more than one part per million, and a total thermal neutrons absorption microscopic cross‑section of not more …
