| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | Canada | 2 | |
| #3 | United States | 2 | |
| #4 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Live-saving devices | |
| #2 | Unspecified technologies | |
| #3 | Travel equipment | |
| #4 | Protective garments | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Parsons Patrick | 4 |
| #2 | Feathers Leonard J | 2 |
| #3 | Pike David William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9203868D0 | Breathing apparatus | |
| GB9107523D0 | Breathing apparatus | |
| GB9105925D0 | Breathing apparatus | |
| GB8814337D0 | Respiratory protection assembly | |
| GB8513829D0 | Breathing apparatus | |
| US4667670A | Gas flow control valves |