| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 9 | |
| #2 | EPO (European Patent Office) | 1 | |
| #3 | United States | 1 | |
| #4 | WIPO (World Intellectual Property Organization) | 1 |
| # | Technology | |
|---|---|---|
| #1 | Systems controlling non-electric variables | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hargreaves Alan George | 3 |
| #2 | Swallow David | 3 |
| #3 | Woodford Peter James | 2 |
| #4 | Hargreaves Alan | 1 |
| #5 | Hargreaves Alan G | 1 |
| #6 | Ltd International Gas Apparatu | 1 |
| #7 | Woodford Peter J | 1 |
| #8 | Woodford Peter | 1 |
| #9 | Wright Lawrence David Houston | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9200931D0 | Pressure control system | |
| GB9123469D0 | Gas pressure control apparatus | |
| GB9113698D0 | Under-pressure responsive gas valve | |
| GB9105020D0 | Gas valve | |
| GB9103110D0 | Temperature sensitive valve | |
| GB8809320D0 | Gas pressure control apparatus |