| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | Australia | 3 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Thermal processes | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Making metal sheets | |
| #2 | Pipes | |
| #3 | Air-conditioning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Firth Colin | 10 |
| #2 | Firth Colin Firmac Limited | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB9004992D0 | Method and apparatus for forming one piece duct sections | |
| GB8916547D0 | Improvements relating to duct manufacture | |
| GB8826511D0 | Duct jointing devices | |
| GB8804428D0 | Duct jointing devices | |
| GB8704303D0 | Duct jointing devices |