| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | United Kingdom | 5 | |
| #3 | France | 2 | |
| #4 | Spain | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Thermal processes | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Special electric heating or lighting | |
| #2 | Domestic stoves | |
| #3 | Capacitors and switching devices | |
| #4 | Resistors | |
| #5 | Soldering, welding and flame cutting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Resistor Corporation American | 5 |
| #2 | Martin Pope | 1 |
| #3 | John Brady | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2987813A | Hermetically sealing a tubular element or container | |
| GB262460A | Improvements in and relating to electrical heating apparatus | |
| GB262461A | Improvements in and relating to electrical heating appliances | |
| GB257950A | Improvements in electrical heating apparatus | |
| GB257949A | Improvements in electrical furnaces | |
| GB239216A | Improvements in or relating to electrical resistance units |