| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | South Africa | 4 | |
| #3 | Australia | 3 | |
| #4 | New Zealand | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Systems controlling non-electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Relf V | 4 |
| #2 | Relf Victor Keith | 3 |
| #3 | Relf V K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NZ217880A | Shower mixing valve: resilient seals fixed relative to the cylindrical rotating member | |
| GB1411728A | Valves | |
| AU4729072A | Improvements in and relating to pressure reducing valves | |
| GB1359612A | Pressure reducing valves | |
| GB1326254A | Mixing valves | |
| AU1238070A | Improvements in or relating to dispensers | |
| GB1275975A | Improved pressure reducing valve and/or relief valve |