| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 6 | |
| #2 | Poland | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | China | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sandvold Arne | 11 |
| #2 | Laugerud Sverre | 3 |
| #3 | Storaas Leif Konrad | 2 |
| #4 | Sandvold A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO03018255A1 | An apparatus for edge grinding of plates | |
| US6527629B1 | Grinding device for rounding off edges of an opening in a work piece | |
| PL315026A1 | Edge grinding machine for rounding sharp edges of workpieces |