| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 18 | |
| #2 | Germany | 6 | |
| #3 | Austria | 2 | |
| #4 | Canada | 1 | |
| #5 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy | |
| #3 | Mechanical elements | |
| #4 | Chemical engineering | |
| #5 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Dynamo-electric machines | |
| #3 | Loudspeakers and microphones | |
| #4 | Gearing | |
| #5 | Spinning | |
| #6 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emil Knecht | 14 |
| #2 | Knecht Emil | 13 |
| Publication | Filing date | Title |
|---|---|---|
| ES216878A1 | A player apparatus with reversible sound arm (Machine-translation by Google Translate, not legally binding) | |
| CA555837A | Gramophone drive-responsive needle selector |