| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | Germany | 4 | |
| #3 | Canada | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Tuning resonant circuits |
| # | Name | Total Patents |
|---|---|---|
| #1 | Erik Wennerbo | 1 |
| #2 | Noren Helge | 1 |
| #3 | Helge Noren | 1 |
| #4 | Arvidius Svante Philip | 1 |
| #5 | Kylemo Folke | 1 |
| #6 | Wennerbo Erik | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB657975A | Improvements in or relating to the tuning device of a radio apparatus or a similar apparatus | |
| GB659932A | Improvements in or relating to record changing phonographs | |
| US2486898A | Magazine phonograph | |
| GB569789A | Improvements in magazine gramophones | |
| GB518205A | Improvements in talking machines for playing a plurality of records in succession | |
| GB449987A | Improvements in magazine gramophones | |
| CA397015A | Automatic talking machine |