| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 2 | |
| #2 | United States | 2 | |
| #3 | Australia | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Germany | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | France | 1 | |
| #8 | Italy | 1 | |
| #9 | Netherlands | 1 | |
| #10 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Furniture and games | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Street cleaning | |
| #2 | Domestic washing | |
| #3 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duncan Ian James | 2 |
| #2 | Duncan I J | 2 |
| #3 | Jones Peter Aelwyn | 1 |
| #4 | Jones Peter A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0021784A1 | Rotary brush mounting | |
| GB1495540A | Hydrostatic transmission | |
| GB1483261A | Suction cleaning apparatus |