| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 2 | |
| #2 | Italy | 2 | |
| #3 | Sweden | 2 | |
| #4 | Austria | 1 | |
| #5 | Australia | 1 | |
| #6 | Belgium | 1 | |
| #7 | Canada | 1 | |
| #8 | Germany | 1 | |
| #9 | EPO (European Patent Office) | 1 | |
| #10 | Spain | 1 | |
| #11 | United Kingdom | 1 | |
| #12 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Advertising | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ahlgren Stig Bertil | 6 |
| #2 | Ahlgren S B | 3 |
| #3 | Ahlgren Stig B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0202469A1 | Driving device for signs | |
| NL8400166A | Advertising device with display screens on three sides. |