| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 12 | |
| #2 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Transport | |
| #3 | Control | |
| #4 | Semiconductors | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wright Barry | 10 |
| #2 | Denholm Andrew S M | 2 |
| #3 | Wright Barry Thomas | 1 |
| #4 | Wareing Ian | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0525687D0 | Signal device | |
| GB0518751D0 | Lamp with changeable coloured filters | |
| GB0225665D0 | Control circuit | |
| GB0225667D0 | Control circuit | |
| GB0224435D0 | Mounting signal lights | |
| GB0224437D0 | Optically aligned rail signal lamp | |
| GB0323808D0 | Signal apparatus | |
| GB0028485D0 | Signal apparatus | |
| GB9918774D0 | Clamp | |
| GB8813955D0 | Light metering device | |
| GB8810709D0 | Warning lamp |