| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | United States | 2 | |
| #3 | Germany | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Siphons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Metcalfe James | 7 |
| #2 | Metcalfe James Croxon | 6 |
| #3 | Metcalfe Richard David | 6 |
| #4 | David Metcalfe Richard | 2 |
| #5 | James Metcalfe | 2 |
| #6 | Croxon Metcalfe James | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1342128A | Injector | |
| US1329465A | Injector | |
| GB142539A | Improvements in injectors |