In 1895, the trident was registered with the Imperial Patent Office in Berlin as the company's trademark. Brand recognition rose as Wüsthof showcased at industrial and commercial exhibitions both at home and abroad, such as the 1902 Düsseldorf exhibition; production increased and further diversified, with facilities for nickel-plating and separate divisions for razor blades, scissors and cutlery. The 1904 Wüsthof catalogue shows, amongst other wares, 1125 different models of pocket knives on 48 pages. In the 1930s, knife production was switched to stainless steel.