| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 10 | |
| #2 | United Kingdom | 8 | |
| #3 | Germany | 5 | |
| #4 | United States | 3 | |
| #5 | Switzerland | 1 | |
| #6 | France | 1 | |
| #7 | Japan | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Clemmensen E | 2 |
| #2 | Scheibel A | 2 |
| #3 | Arentzen Holger Christian | 2 |
| #4 | Anneberg V | 2 |
| #5 | Gudmandsen R | 2 |
| #6 | Scheibel Axel | 2 |
| #7 | Heningu Shiyumitsuto Madosen | 1 |
| #8 | Clemmensen Ellen | 1 |
| #9 | Andersen Henning | 1 |
| #10 | Knudsen E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1384968A | Electromechanical transducers | |
| US3700829A | Magnetic stereophonic phonograph pickup | |
| GB1144955A | Phonograph pick-ups | |
| GB1000035A | A stereophonic electrodynamic pickup | |
| GB859606A | Mechanical-electrical signal converter | |
| GB832891A | Improvements in or relating to a device for the recording or reproduction of sound tracks | |
| GB700155A | Phonographic pick-up | |
| GB690490A | Improvements in phonograph pick-up devices |