| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 4 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 | |
| #4 | Austria | 2 | |
| #5 | Switzerland | 2 | |
| #6 | Spain | 2 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Engines, pumps and turbines | |
| #3 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Dynamo-electric machines | |
| #3 | Steam turbines | |
| #4 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnsen Jonas Albert | 12 |
| #2 | Jonas Albert Johnsen | 2 |
| #3 | Walleen Carl Alphonse | 1 |
| #4 | Thorbjoernsen Joseph Alfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB100528A | Improvements in Mechanisms for the Transmission or Transformation of Micro-movements. | |
| US1229619A | Device for transmitting or transforming micromovements. | |
| US1056338A | Friction-turbine. | |
| GB191112141A | Process and Apparatus for Producing and Utilising Micro Movements suitable for Telegraphic, Telephonic and other purposes. | |
| US1075786A | Apparatus for producing and utilizing micro movements in weak-current technics. | |
| GB190826507A | Improved Means for Conducting Current to or from Continuous Current Electrical Machines. |