| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 17 | |
| #2 | Spain | 1 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Making metal sheets | |
| #3 | Pipes | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schaad Irene | 16 |
| #2 | Irene Schaad | 2 |
| #3 | De Ingenieurfirma Ferranti S Z | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US813454A | Coupling-joint for pipe-sections. |