| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 7 | |
| #2 | Germany | 2 | |
| #3 | United States | 2 | |
| #4 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Toys | |
| #2 | Unspecified technologies | |
| #3 | Games | |
| #4 | Teaching materials | |
| #5 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Petersson I | 2 |
| #2 | Petersson Nils A I | 2 |
| #3 | Petersson N A I | 1 |
| #4 | Kaufman Y | 1 |
| #5 | Hagland-Ahrnborg K M | 1 |
| #6 | Pettersson N A I | 1 |
| #7 | Nirusu Anderusu Ingufuaru Pete | 1 |
| #8 | Olsson B F | 1 |
| #9 | Hagland-Ahrnborg Kerstin Marga | 1 |
| #10 | Pettersson Nils Anders Ingvar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4484407A | Connection element for assembling toys | |
| SE8200355L | Toy construction set | |
| US4361979A | Connection element for making assemblies of toy units | |
| SE8006222L | Game board for a so-called maze game | |
| DE2601070A1 | Child's educational toy for dexterity - has board with pairs of interconnected hand grips of same shape and/or colour |