| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Systems controlling non-electric variables | |
| #2 | Coin-freed | |
| #3 | Domestic stoves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Thorp Franklin | 5 |
| #2 | Butterworth Edward | 2 |
| Publication | Filing date | Title |
|---|---|---|
| GB444397A | Improvements in gas governors | |
| GB443570A | Improvements in gas governors | |
| GB437182A | Improvements in prepayment mechanism for the supply of gas | |
| GB428797A | Improvements in and relating to prepayment meter mechanism | |
| GB403490A | Improvements relating to oil vapour stoves | |
| CA278973A | Wet gas meter | |
| CA274464A | Dry gas meter | |
| CA274465A | Wet gas meter | |
| CA323741A | Gas meter | |
| CA298688A | Dry gas meter |