Toy building sets and building blocks
United States Patent 3034254
Inventors:
Kirk, Christiansen Godtfred
Publication Date:
05/15/1962
Other Classes:
52/592.300, 52/284, D21/505
International Classes:
A63H33/08; A63H33/04
Foreign References:
| AU128398B | | | | |
| GB601782A | | | | |
| IT470183B | | | | |
| GB676469A | | | | |