| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 2 | |
| #2 | Norway | 2 | |
| #3 | Sweden | 2 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | Finland | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Testing of structures | |
| #2 | Pipes | |
| #3 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rosenberg D | 3 |
| #2 | Tillander Ragnar | 2 |
| #3 | Rosenberg Donald | 1 |
| #4 | Ragnar Tillander | 1 |
| #5 | Berg P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1335206A | Method and device for sealing conduits from the inside |