| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | Switzerland | 3 | |
| #3 | Denmark | 2 | |
| #4 | Canada | 1 | |
| #5 | Spain | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Foundations and excavations | |
| #2 | Finishing work on buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wolle Rudolf | 13 |
| Publication | Filing date | Title |
|---|---|---|
| CA152299A | Concrete sleeper | |
| US993136A | Pole of reinforced concrete. | |
| GB191001330A | An Improvement in Ferro Concrete Piles. |