| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | Australia | 4 | |
| #3 | Germany | 3 | |
| #4 | Japan | 3 | |
| #5 | Denmark | 2 | |
| #6 | United States | 2 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 | |
| #10 | Greece | 1 | |
| #11 | Ireland | 1 | |
| #12 | Italy | 1 | |
| #13 | Netherlands | 1 | |
| #14 | Sweden | 1 | |
| #15 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Furniture and games | |
| #3 | Civil engineering | |
| #4 | Control | |
| #5 | Machines | |
| #6 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Domestic washing | |
| #3 | Street cleaning | |
| #4 | Systems controlling non-electric variables | |
| #5 | Spraying devices | |
| #6 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Prestwich John Richard | 12 |
| #2 | Prestwich J R | 3 |
| #3 | Jiyon Richiyaado Puresuuitsuch | 2 |
| #4 | Prestwich J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB2036166A | High pressure pump | |
| GB1575724A | High pressure water supply systems | |
| DE2701574A1 | HIGH PRESSURE PUMP | |
| GB1503122A | High pressure pumps | |
| JPS5225469A | Surface cleaner | |
| ZA7505365B | Improvements in or relating to surface treatment apparatus | |
| DE2537004A1 | Improved surface cleaning appts. - comprises nozzle directing liquid jet at acute angle onto surface being cleaned | |
| GB1468249A | Foam producing apparatus | |
| AU8394975A | Improvements in or relating to surface treatment apparatus | |
| US4023233A | Surface cleaning device | |
| GB1459181A | Surface cleaning apparatus | |
| GB1327799A | Surface cleaning | |
| GB1311058A | Fluid sealing devices |