| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 5 | |
| #3 | Sweden | 3 | |
| #4 | France | 2 | |
| #5 | Switzerland | 1 | |
| #6 | Germany | 1 | |
| #7 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Control | |
| #3 | Textiles and paper | |
| #4 | Electrical machinery and energy | |
| #5 | Surface technology and coating | |
| #6 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Teaching materials | |
| #3 | Typewriters | |
| #4 | Mechanical control devices | |
| #5 | Magnets and transformers | |
| #6 | Electric switches | |
| #7 | Electrolytic processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rayner Wilfred H G | 2 |
| #2 | Charlesworth David Valentine | 2 |
| #3 | Glazer Julien | 2 |
| #4 | Rayner W | 2 |
| #5 | Charlesworth D V | 1 |
| #6 | Namenyi-Katz L | 1 |
| #7 | Bellis Frederick Victor | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8631079D0 | Braille read-out | |
| GB8616841D0 | Braille read-out | |
| GB8409905D0 | Tape player | |
| GB2078617A | Keyboard terminal unit | |
| GB1557001A | Magnetically operated displacement transducers | |
| GB1539728A | Magnetic tape recordings | |
| US3866020A | Braille tape reader | |
| US3639705A | Joystick control switch | |
| US3680812A | Tape recorder | |
| US3716241A | Drive apparatus for tape playback apparatus | |
| US3504133A | Indexing means for multi-track magnetic tape reproducing apparatus |