| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Construction of roads | |
| #2 | Venting or aerating devices | |
| #3 | Books | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rydberg S | 1 |
| #2 | Lindskog B | 1 |
| #3 | Wallace D | 1 |
| #4 | Lindskog Bertil Nils | 1 |
| #5 | Bertil Nils Lindskog | 1 |
| #6 | Lindskog N | 1 |
| #7 | Lindskog Nils Bertil | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA936033A | Apparatus for the laying and rolling out of coating or paving materials | |
| US3730218A | Non-return valves |