| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 7 | |
| #2 | Austria | 2 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 1 | |
| #5 | Spain | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Materials and metallurgy | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Accessories for machine tools | |
| #3 | Control or regulating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nielsen Aage | 12 |
| #2 | Aage Nielsen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1096794A | Automatic stop mechanism for phonographs. | |
| CA331965A | Porous clay article | |
| CA709116A | Vacuum cleaner for automobiles |