| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | Austria | 2 | |
| #3 | Germany | 2 | |
| #4 | Denmark | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Materials and metallurgy | |
| #3 | Thermal processes | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Shaping clay | |
| #2 | Building materials | |
| #3 | Domestic stoves for solid fuels | |
| #4 | Construction of roads |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kanderkies A-G | 5 |
| #2 | Schmid Arnold | 1 |
| #3 | Bauriedl Josef | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1118680B | Device for manufacturing concrete pipes | |
| DE711192C | Mobile plant for the production of spun concrete pipes |