| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Argentina | 1 | |
| #2 | Australia | 1 | |
| #3 | EPO (European Patent Office) | 1 | |
| #4 | Spain | 1 | |
| #5 | Finland | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Greece | 1 | |
| #8 | Ireland | 1 | |
| #9 | Norway | 1 | |
| #10 | Poland | 1 | |
| #11 | Portugal | 1 | |
| #12 | South Africa | 1 | |
| #13 | Zimbabwe | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lenton Douglas Francis | 5 |
| #2 | Lenton D F | 1 |
| #3 | Francis Lenton Douglas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB2069063A | Improvements in peristaltic pumps | |
| AU6707681A | Improvements in peristaltic pumps | |
| ZA8100545B | Peristaltic pumps |