| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United States | 6 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement | |
| #4 | Thermal processes | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Electric switches | |
| #3 | Measuring electric variables | |
| #4 | Electrically-conductive connections | |
| #5 | Steam generation | |
| #6 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Blackwood William C | 2 |
| #2 | Emil Hill Edward | 1 |
| #3 | Bennett Irving T | 1 |
| #4 | Magalhaes Frank V | 1 |
| #5 | Hagist Emil T | 1 |
| #6 | Eilenberg Theodore R | 1 |
| #7 | Murray Jr Thomas E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1923875A | Boiler | |
| US1737235A | Switch box | |
| US1739142A | Switch-box cover and attachment | |
| US1714006A | Rack for electric conduits | |
| US1606890A | Switch and fuse mechanism | |
| US1640814A | Distribution unit for electric circuits | |
| CA298523A | Radiator |