| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | United Kingdom | 4 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Medical technology | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Charles Leonard Frederick | 2 |
| #2 | Leonard Frederick C | 2 |
| #3 | Clarke Charles R | 1 |
| #4 | Coppage Frederick C | 1 |
| #5 | Leonard Frederick Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB497608A | Improvements in, or relating to, thermostatic fluid mixing valves | |
| GB498244A | Improvements in or relating to fluid-mixing valves | |
| GB488061A | Improvements in or relating to thermostatic regulators | |
| GB494247A | Improvements in or relating to thermostatic mixing valves | |
| US2206905A | Flow control mechanism | |
| US1856318A | Continuous flow tub | |
| DE430856C | Thermostatic mixing valve | |
| US1535485A | Thermostatic valve | |
| US1476719A | Thermostatic valve | |
| US1476718A | Automatic controlling valve | |
| CA239889A | Thermostatic valve |