| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 4 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Thomas Bowler | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB444516A | Improvements in and relating to valves | |
| GB393796A | Improvements in valves | |
| US1934255A | Valve | |
| GB337322A | Improvements in and relating to valve seats | |
| GB345244A | Improvements in and relating to stop valves | |
| GB325443A | Improvements in and relating to poppet valves | |
| US1756337A | Poppet valve | |
| GB232233A | Improvements in or relating to valves | |
| US1536760A | Valve | |
| US1508047A | Valve |