| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Canada | 2 | |
| #3 | France | 2 | |
| #4 | Sweden | 2 | |
| #5 | Australia | 1 | |
| #6 | Denmark | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Japan | 1 | |
| #9 | Netherlands | 1 | |
| #10 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Transport | |
| #3 | Organic fine chemistry | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Devices for public amusement | |
| #2 | Vehicle suspension arrangements | |
| #3 | Nails | |
| #4 | Acyclic or carbocyclic compounds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Petersen Tom Lindhardt | 5 |
| #2 | Petersen T L | 2 |
| #3 | Petersen Tom L | 2 |
| #4 | Wils Tom L | 1 |
| #5 | Tomu Rindoharuto Piitaasen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4379550A | Ground supported playground device | |
| DE2829466A1 | PLAYGROUND DEVICE | |
| DE2607476A1 | GAME DEVICE | |
| DE2558098A1 | Tamper proof cap for fastening nut - has cap snap fit in base held non rotatably beneath nut |