| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Italy | 3 | |
| #3 | Germany | 2 | |
| #4 | Denmark | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | AC and DC conversion devices | |
| #3 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kudelski S | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB1424821A | Record player recirculatory memory | |
| GB1386273A | Device for mounting a magnetic head of a magnetic tape recorder | |
| GB1371228A | Magnetic tape recorders |