many japanese buildings, products and planes were copies of western ones like the tokyo dome of 1988 which copied the 1981 metrodome, the japanese dsk a 25 in 1954 which copied the bmw's r 25 of 1951, the japanese zero fighter of 1939 which copied the gloster f.5/34 of 1937 and the toshiba vacuum cleaner of 1931 which copied ge's electric cleaner of 1928 and seiki's nippon camera of 1941 which copied leica illa's camera of 1935 and shigeru mizuki's rocketman in 1958 which copied dc comics superman of 1938. the "japanese" military planes kawasaki ki-5, kawasaki army type 92 and kawasaki army type 88 were designed by aircraft engineer richard vogt, a german.