| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | United Kingdom | 2 | |
| #3 | Sweden | 2 | |
| #4 | South Africa | 2 | |
| #5 | Austria | 1 | |
| #6 | Belgium | 1 | |
| #7 | Germany | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 | |
| #10 | Ireland | 1 | |
| #11 | Israel | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Control | |
| #3 | Electrical machinery and energy | |
| #4 | Basic communication technologies | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnstone F | 7 |
| #2 | Smillie G | 5 |
| #3 | Smillie G H | 2 |
| #4 | Johnstone Frank | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1599757A | Voltage converter | |
| GB1553510A | Control apparatus | |
| IE35196B1 | Electrical heating apparatus | |
| CA930004A | Electrical heating apparatus |