| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 20 | |
| #2 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Earth drilling | |
| #3 | Systems controlling non-electric variables | |
| #4 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hamer Leland Stanford | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB851288A | Improvements in or relating to fluid-flow controlling gate valves | |
| GB807524A | Gate valves | |
| GB797890A | Flow control fitting | |
| GB791124A | Sealed gate valve | |
| GB770694A | Improvements in or relating to valves | |
| GB739519A | Gate valve construction | |
| GB729195A | Angular flow control fitting | |
| GB735401A | Flow controlling fitting | |
| GB724578A | Seat ring for valves | |
| GB724577A | Gate valve | |
| GB703396A | Flow controlling device | |
| GB668583A | Double gate valve | |
| GB679209A | Flow control fittings | |
| GB660206A | Pipe line fitting | |
| GB653715A | Flow control device | |
| GB661669A | A flow control fitting for pipe lines | |
| GB659093A | Flow control device | |
| GB672126A | Pipe fitting | |
| GB603090A | Fitting for controlling the flow of fluid in pipe lines | |
| GB244597A | Well cap |