Kishi Yoshihiro: A toy building element. Kishi Yoshihiro, June 10, 1970: GB1194445-A (10 worldwide citation)

1,194,445. Toy building element. Y. KISHI. 14 Nov., 1968 ¦[18 Nov., 1967], No. 53969/69. Heading A6S. A toy building element integrally moulded from a synthetic resin comprises a hollow block having a pair of opposed side walls, a pair of opposed end walls, an upper wall and a plurality of projectio ...