| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Denmark | 4 | |
| #3 | United States | 4 | |
| #4 | Germany | 3 | |
| #5 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Electrical machinery and energy | |
| #3 | Machine tools | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Metal production and refining | |
| #2 | Details of furnaces | |
| #3 | Special electric heating or lighting | |
| #4 | Alloys | |
| #5 | Grinding tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pfanstiehl Carl A | 3 |
| #2 | Pfanstiehl Carl Alonzo | 2 |
| #3 | Pfansthiel Carl A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA182922A | Puppet valve | |
| CA181777A | Electric furnace | |
| US1218582A | Electric furnace. | |
| US1217497A | Electric furnace. | |
| US1210358A | Process of forming abrasive wheels and product thereof. | |
| US1220886A | Tungsten contact-point. |