Kits for building three dimensional prototype models of structures, comprised of miniature building blocks, links therefore, and electrically operated motors, for use in schools and universities for educational purposes

Children's Toys and Playthings-Namely, Hand-Held and Hand-Operated Vehicles, Electrical and Electronic Construction Sets, Building Games Consisting of Parts to Be Assembled into Finished Models [, Trains, Train Cars and Train Tracks ]

TOYS AND PLAYTHINGS, NAMELY CONSTRUCTION AND EXPERIMENTAL BUILDING BLOCK SETS FOR ERECTING OF TOY MODELS; CASES CONTAINING BUILDING BLOCKS FOR CONSTRUCTION OF MODELS AND FOR EXPERIMENTATION

Children's Toys and Playthings-Namely, Hand-Held and Hand-Operated Vehicles, Models and Construction Sets Consisting of Building Elements, Electrical and Electronic Building Games Consisting of Parts to Be Assembled, Trains, Train Cars and Train Tracks

TOYS AND PLAYTHINGS, NAMELY CONSTRUCTION AND EXPERIMENTAL BUILDING BLOCK SETS FOR ERECTING OF TOY MODELS; CASES CONTAINING BUILDING BLOCKS FOR CONSTRUCTION OF MODELS AND FOR EXPERIMENTATION

TOYS AND PLAYTHINGS, NAMELY CONSTRUCTION AND EXPERIMENTAL BUILDING BLOCK SETS FOR ERECTING OF TOY MODELS; CASES CONTAINING BUILDING BLOCKS FOR CONSTRUCTION OF MODELS AND FOR EXPERIMENTATION

TOYS AND PLAYTHINGS, NAMELY CONSTRUCTION AND EXPERIMENTAL BUILDING BLOCK SETS FOR ERECTING OF TOY MODELS; CASES CONTAINING BUILDING BLOCKS FOR CONSTRUCTION OF MODELS AND FOR EXPERIMENTATION

TOYS AND PLAYTHINGS, NAMELY CONTRUCTION AND EXPERIMENTAL BUILDING BLOCK SETS FOR ERECTING OF TOY MODELS; CASES CONTAINING BUILDING BLOCKS FOR CONSTRUCTION OF MODELS AND FOR EXPERIMENTATION