| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | France | 5 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Textiles and paper | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Unspecified technologies | |
| #3 | Paper goods | |
| #4 | Servomotors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alessandro Calzoni Soc | 5 |
| #2 | Dante Colliva | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2725797A | Apparatus for making asbestos cement pipes | |
| US2760413A | Automatic control for mandrel-carrying shaft in tube forming machines |