Toy building block puzzle
US5653621A · kind A · utility
49Cited by
5References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jan 3, 1996 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Jan 3, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/082
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A toy building block puzzle includes a first plurality of differently shaped tall hollow blocks which include lugs and slots on side walls thereof and protrusions and recesses on respective upper and lower sides thereof by which blocks of same or different shapes may be detachably interconnected to each other in vertical and horizontal planes. A second plurality of building elements comprises of adapters shaped as rods to increase permutations of interconnection between the blocks of the first group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.